2011 01 19 bridge construction partner
TRANSCRIPT
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B R I D G E CONSTRU CTIO N PARTNER
PRECASTSEGMENTAL
CONSTRUCTION
INSITU
CONSTRUCTION
HEAVY LIFTING
STAY CABLECONSTRUCTION
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CONTENTS
From Post-tensioning to Bridge Construction Partner ------- 3
VSL turnkey services ----------------------------------------------------- 4
Safety first ------------------------------------------------------------------- 6Encouraging development of employees skills ------------------- 7
Precast segmental erection
Balanced cantilever erection with launching gantry ------ 8
Span by span erection with launching gantry -------------- 10
Balanced cantilever erection with lifting frames ---------- 12
Balanced cantilever erection with cranes ------------------ 14
Precast beam method -------------------------------------------- 16
Full span precast method --------------------------------------- 18
Span by span erection on falsework ------------------------ 20
Insitu construction
Incremental launching method --------------------------------- 22
Form traveller method ------------------------------------------- 24
VSL Form systems ----------------------------------------------- 26
Heavy lifting applications for bridge construction --------------- 28
Stay cable bridge construction
VSL SSI 2000 Stay cable system ---------------------------- 30
Creating sustainable solutions together----------------------------- 32
Sungai Johor - Malaysia(2006-2009)
Gautrain - South Africa(2008-2010)
North Arm Canada Line- Canada(2006-2008)
La Unidad Bridge - Mexico(2002-2003)
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From Post-tensioning to Bridge Construction
Partner
VSL is recognised as a world leader in specialist construction engineering andassociated technologies and services. Today, VSL operates as a network through50 locations established on 6 continents. VSL provides a full range of technical
and construction services for bridge construction, including design evaluation,permanent works design, temporary works design and construction engineering,precasting management and bridge construction.
Innovative solutions worldwide
VSL has contributed to some of the most prestigious and complex bridge structuresaround the world, ranging from large span stay cable bridges to conventionalprecast beam bridges. References include: the first full span bridge in Ductal(Seonyu Footbridge, Korea, 2001), Shenzhen Western Corridor, Hong Kong (2006),with a new lifting frame for balanced cantilever construction, allowing constructionof twin decks simultaneously, the Stonecutters Bridge in Hong Kong (2008), a mostcomplex heavy lifting operation for one of the longest stay cable bridges in the
world, the Gateway Bridge duplicate in Brisbane, Australia (2009) where VSL hasimplemented new form travellers allowing prefabrication of the web reinforcement,fast track erection of bridge segments on the Light Rail Transit in Dubai (2009),the bridges on the Gautrain railway, South Africa (2010), the Baluarte Stay Cablebridge, Mexico (2010), with the highest main span worldwide.
VSL has evolved from a specialist post-tensioning company into a multi disciplinebridge partner, capable of providing contractors and engineers with constructionand engineering services for highly complex and demanding projects. Moreimportantly, the localised organisation of VSL provides clients with innovativepractical designs and construction solutions adapted to suit the local market.
Promoting highly efficient rates of construction
With extensive experience in large infrastructure and superstructure projects,VSL has a proven record of developing project-specific construction systemsand methods that promote highly efficient rates of construction and facilitateprogramme surety, while maintaining and always enhancing essential safety andquality control measures.
Lateral thought processes encouraged within the design and production teamsprovide a suitable environment in which to nurture novel, and often remarkablysimple solutions to demanding problems. The exchange of knowledge within theVSL global network enables the groups considerable experience to be fully utilisedand applied in a wide variety of engineering domains.
As a specialist bridge partner, VSL can bring the project team an extensive
experience gained from erecting over 100,000 precast bridge deck elements(providing almost 5 million square meters of bridge surface), constructing multiplein-situ bridges utilising VSL form travellers and incremental launching methodsand also being involved in the construction of over 150 stay cable bridges.
VSL is committed to offering clients the best for project service that has recentlyled to the development and implementation of various innovative Partnering and
Alliancing arrangements that have proved to be highly successful and mutuallybeneficial to all parties.
3
Seonyu Footbridgein Ductal-Korea (2001)
Taiwan High Speed Rail C215 -Taiwan(2000-2004)
Shenzhen Western Corridor -Hong Kong (2004-2005)
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VSLS TURNKEY SERVICESFrom the very early concept design all the way through to the projects handover and beyond, VSL isworking closely with its customers. Owners require the most suitable project completed as quickly aspossible in the most economic and durable manner. Contractors need feasibility studies to establish themost efficient and cost-effective building solution.
VSL provides
Collaboration with the permanent works designer forsuperstructure design and rationalisation Construction engineering Geometry control Leadership in the temporary construction works Assistance to designers in making the structure easy and
efficient to build, including reviewing the small details that willease construction
Defining and designing the temporary works and specialequipment required, including assessment of their impact onthe permanent structure
Integrated workshop drawings for fabrication of thesuperstructure
Incorporation of the post-tensioning with all associateddesign and detailing
Detailed methods of construction
Design of temporary works associated with precast yard and moulds
VSL provides
Conceptual permanent substructure and superstructure designworks in conjunction with consultants
Material quantities and specifications, defined in conjunction
with consultants Superstructure construction methodology, assessment of
temporary works and special equipment requirements Superstructure construction sequence and programme Preparation of superstructure construction cost estimates for
budgeting Preparation of outline superstructure safety and quality control
plans Preparation of outline superstructure project management plans
Define Optimise
Choice of construction methods based
on local environmental and economicconstraints Structure type and the temporary works
required Project timeline
Cost comparisons for budgeting
Structural principles Selection of locally available materials
Outlined construction methods and definitionof temporary works
Detailed design of permanent structure,taking account of the construction methods
Integrated workshop drawings
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VSL provides
Monitoring the behaviour and aging of the structure, toanticipate repair costs and to keep maintenance activitiesand their impact on the structural operation to a minimum Defining and planning the most suitable monitoring scheme
and its budget for installation and implementation Supply of hardware and software for monitoring the structure Training the client and handing over the system Inspection of the structure when required and issuing reports Proposal of repair or strengthening plans if required Implementation of repair and/or strengthening plans as
required
VSL provides
Building the project quickly, efficiently and at the lowestcost possible Mobilisation of an experienced project team for
superstructure construction, capable of site assistance up tothe level of overall site management
Implementation of strict safety/QA/QC standards for buildingthe superstructure
Implementation of operating permits for major equipment Supply of temporary works associated with the precast yard
and moulds Supply and operation of the temporary works associated with
superstructure construction Effective site logistics control for superstructure construction
Effective communication and coordination with the variousentities associated with the superstructure construction
Fast-track problem solving
Project control procedures to ensure superstructure deliveryaccording to schedule and specification
Deliver Maintain
Design of erection equipment with the performance
to meet the programme and the specifications Fabrication of temporary works Set-up and management of precasting areas
Mobilisation of highly qualified staff Management of the construction project
Monitoring of the structure
Periodic maintenance Strengthening if required
Repairs on demand
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Safety first
VSLs construction projects for bridgesand other structures involve the operationof major items of machinery, which are
usually designed or adapted to meet the
specific conditions and constraints of eachparticular project. This means that VSLsequipment is usually complex and oneof-a-kind, controlled by multiple operators.It therefore requires a high level ofpreparation, engineering, coordinationand skills to ensure its safe and efficientoperation.
Health and safety
VSLs top priority is the health andsafety of its workforce and everyoneelse potentially affected by its activities.VSLs approach meets internationalstandards and routinely goes beyond localrequirements and expectations on all itsconstruction sites worldwide. The wholeVSL Group adopts this attitude. Worldwide
safety days are organised within thenetwork with the aim of improving safetyawareness and standards.
Although projects are supported by strongsafety teams, all VSL staff membersare also well aware that safety is a vitalconcern.All employees actively participate in thecreation of a safe working environment byproactively identifying and communicatingany concerns encountered on the job. All
employees are given the authority andresponsibility to stop what they are doing
and address the situation if they feel itcompromises safety.
MEOP a license tooperate
To improve safety and efficiency, thein-house operating permit system MEOP(major equipment operation permit) iscompulsory on all VSL projects usingmajor equipment.
The permit system is based on thefollowing principles:- Design review process that includes
an external and independent checkingengineer
- Review of the project set-up in terms ofmethods, procedures, checklists, holdpoints, emergency preparedness, healthand safety
- Review of organisational and back-upplans as well as training and qualifyingof key staff, with written tests designed
to assess understanding of risks andprocedures
- Review of fabrication and quality controlof the equipment
- Review of the equipment assembly andcommissioning
- Review of all critical operations- General site review
Permits are granted by a panel of
independent internal auditors at theconclusion of a site audit carried out toreview all of the above aspects, checkingsafety, quality, technical and operationalissues.Permits are generally valid for a periodof six months and are renewed then or atany time when there is a change on theproject such as construction methods,organisation and equipment.
Permit No.
MAJOR EQUIPMENT OPERATIONPERMIT
The operation of the following Major Equipment is permitted: in the specified location; under the authority of the specifiedProject Manager; in strict accordance with the permit conditions; and, during the specified period only.
Profit Centre: Project Name:
Project/Job No.: Project Manager:
Equipment Type: Equipment No.:
Equipment Function: Form travelers for In Situ Balance Cantilever construction (underslung)
In accordance withMajor Equipment
Operation Plan Ref.:Rev.: A Date:
Additional Conditions YES (See Attached) NO
Permit Period (inclusive)
From: To:
Permit Type: Commissioning Phase Operational Phase Revised Issue No.: 1
ApprovalName Position Signature Date
Approved By:Group Special projectcoordinator
Changes to Permit Conditions
Any changes to the permit conditions (i.e. to the Major Equipment Operation Plan, or the attached conditions) must be notified immediately to the MEO Teambefore equipment operation proceeds.If the permit requirements cannot be followed for any reason operation of the major equipment must stop until authorization is received.
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Gateway Bridge Upgrade - Australia(2008)
Sagarra Garrigues - Spain(2008)
Baluarte Bridge - Mexico(2010)
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Back to basics: the VSLAcademy, dedicated for
training site staff
The transfer of knowledge and acquiredexperience by senior staff to new staffmembers used to be one of the ways topass on not only the technical details butalso the companys culture and values.Given the evolution in recent years, this
intergenerational transfer is no longerguaranteed throughout the ever growingnetwork. It has thus been decided to createthe VSL Academy, a unique Post- tensioningtraining centre in Bangkok that has beencreated to tackle this challenge.
To enable hands-on practical training, post-
tensioning mock-ups have been built on theAcademys premises and further mock-upsare being designed to cover other appropriateoperational procedures.
The training sessions are given by experiencedstaff and the access to the various levelsis stringent: a written exam has to besuccessfully passed to fulfill the requirementsin stage certification. Before being admittedto the next level, the participants have tobe involved in Post-Tensioning works for aminimum of one year.
Training for Excellence:
thePMX / GMX programVSL launched its PMX (Project ManagerXcellence) training program in 2006 todevelop the capability of Project Managersto take on major projects and managethe operational side of the business. Theobjective is to improve their knowledge and
objective management capabilities.On the basis of these training courses,GMX (General Manager Xcellence), a newprogram, focuses on corporate issues,rather than only project specific ones.GMX is designed to develop the skills of
VSL Managers, in particular leadershipand personal development; to preparehigh potential staff for future managementpositions. GMX runs alongside the existingPMX program as part of VSLs overall staffdevelopment plan.
VSL demanding projects and the highestrequirements in terms of quality of service
reflect themselves in a resolutely proactivetraining organisation within the company. Thecontinuous development of VSLs staff is a keyfactor for excellent performance. It is thus vitalto properly manage competences internallyat all levels and to structure and formalize the
training accordingly.
Encouraging development of employees skills
7
VSL Academy
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SPAN BY SPAN LIFTING FRAME CRANE PRECAST BEAM FULL SPAN PRECAST FALSEWORK INCREMENTAL LAUNCHLANCED CANTILEVER
Front Upper Cross BeamMain Truss
Rear Upper Cross Beam
Direction of Erection
Rear Lower Cross Beam Front Lower Cross Beamear Support Leg
Segment Delivery on CompletedDeck or at Ground Level
Stitching Beam
Closure Stitch FormworkStressing Platform
N-1 N
LANCED CANTILEVER
PRECAST SEGMENTAL ERECTION
BALANCED CANTILEVER ERECTION WITH
VSL has over 20 years experience inthe design and construction of precastsegmental balanced cantilever bridges.VSL in-house technical centres are
primarily involved in the design of erectionsystems and associated temporary works,and have also completed many permanent
works designs in close cooperationand conjunction with Designers andConsultants.VSL has the capability and necessary
experience to work with designers andcontractors to develop cost effective designsthat promote safe, effective construction
sequences and methods while achievingoptimal productivity. VSL is recognisedas a world leader in precast segmentalerection and has worked extensively with
international contractors on technicallydemanding projects. VSLs highly efficienterection systems enable contractors to
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Telok Blangah - Singapore(1998-2001)61,440m2 of deck, 1,460 segments
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FEATURES & ADVANTAGES
RM TRAVELLER FORM SYSTEM STAY CABLEHEAVY LIFTING
Front Support Leg
Pier Bracket
N+1
Description
Span N-1
Stitch N to N-1
Curing of Stitch (Overnight)
Continuity P.T.
Span N
Launch Gantry to Span N
Segment Erection Span N
Span N+1
Erect Pier Segment
Align Pier Segment
Place Reinforcement
Place Formwork
Cast Insitu Diaphragm
Curing Pier/Column Joint
Duration: 6 Shifts
1 2 4 5 63
Typical Erection Cycle
LAUNCHING GANTRY
minimise construction durations whileoptimising quality. VSL regularly achievesproduction rates exceeding one cantileverper week.
Within the VSL organisation, there is anextensive network of project managerial,technical and production staff.
9
econd Gateway Bridge - Australia (2008-010) 29,526m of deck, 700 precast elements
Lai Chi Kok - Hong Kong (2004-2006)63,000m2 of deck, 1,771 segments
henzhen Western Corridor - Hong Kong2004-2005) 90,800m2of deck, 1,879 segments
Waiwera Viaduct - New Zealand (2007-2008)12,130m of deck, 356 pre-cast segments
hatin T3 - Hong Kong (2004-2007)5,800m2 of deck, 1,806 segments
Pakse Bridge - Laos (1998-2000)16,284m2 of deck, 384 segments
Delivery of segments alongcompleted deck to rear ofgantry minimises disruption to
existing traffic networks.
Necessary temporaryworks require little groundimprovement and are generally
elevated, therefore causingminimal disruption to existingroads, structures or services.
Support craneage is reduceddue to temporary works beingrelocated by gantry.
Clear, unobstructed access toall work fronts is provided withingantry system.
Work can proceed on multiplework fronts within the gantry,i.e pier segment erection,cantilever construction andclosure pour construction.
Temporary loads are introduceddirectly into piers.
Fast rates of erection arepossible (up to 6 pairs of
segments per shift are regularlyachieved by VSL).
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SPAN BY SPAN LIFTING FRAME CRANE PRECAST BEAM FULL SPAN PRECAST FALSEWORK INCREMENTAL LAUNCHLANCED CANTILEVER
Main Truss
Direction of Erection
Rear Lower Cross Beam
Rear Support Leg
Segment Delivery atGround Level
Hanger Beams
Winch
Upper Cross Beam
N-2 N-1 N
SPAN BY SPAN
PRECAST SEGMENTAL ERECTION
SPAN BY SPAN ERECTION WITH LAUNCHING
VSL has been involved in an extensivenumber of span-by-span precast segmentalprojects in the Asia region and has recentlycompleted large segmental infrastructure
projects in South America and the MiddleEast. Often in the face of demandingdesign, program and site constraints, VSL
has a proven ability to provide Consultants,Engineers and Contractors with innovative,practical and cost effective solutions, provingto be mutually beneficial to all parties
involved.VSL erection systems are developed tooptimise permanent works design and
minimise additional temporary worksrequired during the construction stage.Within the VSL network, an extensive poolof suitably qualified personnel is available
to manage, supervise and operate thehigh capacity erection gantries. Generally,in support of the production teams, each
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Deep Bay Link - Hong Kong(2004-2005)108,000m2 of deck, 3,014 segments
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FEATURES & ADVANTAGES
RM TRAVELLER FORM SYSTEM STAY CABLEHEAVY LIFTING
Front Lower Cross Beam
Front Support Leg
N+1
Description
Duration: 4-Day CycleTypical Erection Cycle
Launching of Gantry
Segment Placing
Segment Alignment / Gluing
Wet Joint Casting
Curing (Overnight)
Installation of External P.T.
Stressing of External P.T.
1
D/S N/S N/S N/S N/SD/S D/S D/S
2 43
GANTRY
project will have a project specific technicalteam responsible for providing details, andadvising on and monitoring the works toensure all necessary technical and safety
aspects are provided for. In addition, variousVSL technical centres are utilised to providespecific assistance if and when required.
Regular erection rates achieved are 1 spanper 2.5 days with underslung gantries, and1 span per 4 days with overhead gantries.Being allowed to operate 24-hour a day, VSL
recently achieved in Chile a typical erectioncycle of 1 span every 24 hours.
11
ght Rail Transit Duba - UAE (2007-2009)30,000m, 16,450 segments
Deep Bay Link - Hong Kong (2004-2005)108,000m2 of deck, 3,014 segments
West Rail - Hong Kong (1999-2002)16,667m2 of deck, 8,642 segments
Bandra Worli - India (2002-2006)132,130m2 of deck, 2,332 segments
ennys Bay - Hong Kong (2003-2004)6,240m2 of deck, 627 segments
Bangalore Hosur Elevated Expressway India (2006-2008) 9.5km of elevated deck
Flexibility to use overhead orunderslung gantries.
Fast rates of erection arepossible due to use ofexternal post-tensioning (VSLhas achieved rates of erectionexceeding 1 span every 24
hours).
Segment delivery is possiblealong completed deck to rear ofgantry or at ground level.
Smaller crew size is requiredcompared to balanced
cantilever construction.
Good access provided withinthe gantry to all work fronts.
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SPAN BY SPAN LIFTING FRAME CRANE PRECAST BEAM FULL SPAN PRECAST FALSEWORK INCREMENTAL LAUNCHLANCED CANTILEVER
Segment Delivery atGround Level
Alignment/SupportBracket
Stressing Platform
Stitching Beam
Closure Stitch FormworkLifting Spreader Beam
Stressing Platform
Rail Beam Lifting FrameUpper Cross Beam
N-2 N-1 N
LIFTING FRAME
PRECAST SEGMENTAL ERECTION
BALANCED CANTILEVER ERECTION WITH
VSL continually develops innovativelifting solutions applicable to precastsegment erection. VSL strand lifting units,incorporating multiple safety features are
regularly utilised, providing a large rangeof lifting capacities whilst allowing precisealignment and placement of segments.
Ex tens i ve s tud ies conduc ted byVSLs techni cal centres facilita te th edevelopment of project specific liftingsystems. Precast element delivery
usually governs the method adopted andVSL have successfully operated liftingframes suitable for use on projects with
considerable delivery constraints. VSLlifting frames are self-contained andincorporate safe unobstructed workingplatforms and accesses to all necessary
locations.Following assembly, installation andcommissioning by suitable cranes, VSL
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West Tsing Yi - Hong Kong (2004-2005)14,000m2 of deck, 250 segments
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FEATURES & ADVANTAGES
RM TRAVELLER FORM SYSTEM STAY CABLEHEAVY LIFTING
Hanger Beams
1stpair of eld segments erected by crane.Segments are suspended from hanger beams
or lifting frames when there is a wet joint.
Pier Segment Erection by Crane
N+1 N+2
Segment Erection - Pair 2-3
Segment Erection - Pair 6-7
Segment Erection - Pair 8-9
Segment Erection - Pair 10-11
Segment Erection - Pair 12-13
Remove Lifting Frames
Segment Erection - Pair 4-5
Wet Joint Curing
Wet Joint Construction
Segment Erection - Pair 1
Duration: 13 Shifts
1 2 4 5 6 7 8 9 10 11 12 133
Erect & Assemble Lifting Frames &Brackets on Pier Head
Description
Typical Erection Cycle
LIFTING FRAMES
lifting frames can operate independently.VSL lifting systems incorporate two primaryhydraulic systems providing both lifting andself-launching mechanisms. When high
lifting speeds are required, generally greaterthan 20 meters per hour, tandem liftingunits or winch systems have been utilised.
VSL technical centres typically work withengineers to incorporate necessary liftingsystem tie down into the permanent works,to ensure suitable load introduction into the
permanent works and also provide stageby stage analysis, geometry control andprecamber calculation. VSLs experienced
supervisory teams regularly achieveerection cycles of two pairs of segmentsper shift.
13
erembam Middle Ring Rd 2 Malaysia (2008-009) 12,196m of deck, 481 precast elements
Quarashia Bridge - Saudi Arabia(1989-1990) 12,820m2 of deck, 143 segments
ai Chi Kok - Hong Kong (2004-2005)3,000m2of deck, 1,771 segments
isosansen Bridge - Japan (1998-2001)0,000m2 of deck, 344 segments
Shenzhen Western Corridor - Hong Kong(2004-2005) 90,800m2 of deck, 1,879 segments
Relatively simple temporaryworks requirements.
High rates of erection.
Large segments can beerected.
Optimised crew cycles.
Multiple levels of segmentalignment and adjustment arepossible.
Strand lifting units can be
adopted and provide severallevels of safety features.
Deck construction does nothave to be linear, but canbe sequenced to follow pierconstruction.
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SPAN BY SPAN LIFTING FRAME CRANE PRECAST BEAM FULL SPAN PRECAST FALSEWORK INCREMENTAL LAUNCHLANCED CANTILEVER
Segment Delivery atGround LevelAlignment/Support Bracket
Hanger BeamsStitching Beam
Closure Stitch Formwork
Stressing Platform
N-2 N-1 N
CRANE
PRECAST SEGMENTAL ERECTION
BALANCED CANTILEVER ERECTION WITH
Erection using suitable mobile craneagehas frequently been executed by VSL,particularly in relation to balanced cantileverconstruction. When site and ground
conditions are suitable, this method oferection has proved highly effective and canfacilitate considerable rates of erection.
VSL project teams provide detailed craneagestudies helping to optimise crane usage whileminimising disruption to the surroundingenvironment. In particular, VSL has assisted
contractors to develop and implementtemporary traffic management schemes.VSL technical centres work with production
team to develop additional temporary works,in particular pier segment supports andaccess requirements. VSL is capable ofoffering stage-by-stage analysis and detailed
precamber calculation. With careful projectdesign and management, cranes of varyingtypes and capacities have been utilised by
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West Rail - Hong Kong(1999-2002)8,330m2 of deck, 617 segments
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FEATURES & ADVANTAGES
RM TRAVELLER FORM SYSTEM STAY CABLEHEAVY LIFTING
1stpair of eld segments erected by crane.Segments are suspended from hanger beams
if there is a wet joint to be cast.
Pier Segment Erection by Crane
N+1 N+2
Description
Duration: 8 Shifts
1 2 4 5 6 7 83
Installation of
Pier Segment Support Brackets
Installation of Pier Segment
Segment Erection - Pair 1-3
Segment Erection - Pair 4-6
Segment Erection - Pair 7-9
Segment Erection - Pair 10-12
Typical Erection Cycle
CRANES
VSL to achieve the best operating results.Typical erection rates are up to 6 segmentsper day.
15
ai Chi Kok - Hong Kong (2004-2006)3,000m2 of deck, 1,771 segments
West Link - Australia (2004-2005)6,000m2 of deck, 3,013 segments
West Rail - HongKong (1999-2002)8,330m2 of deck,617 segments
Shatin T3 - HongKong (2004-2007)65,800m2 of deck,1,806 segments
Temporary works requirementsare minimised.
Fast rates of erection are possible.
Multiple work fronts arepossible.
Optimised crew size.
Minimal engineeringrequirements.
Cranes are generally readilyavailable in the market.
Cranes can be utilised toexecute other activities.
Deck construction does nothave to be linear, but canbe sequenced to follow pierconstruction.
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SPAN BY SPAN LIFTING FRAME CRANE PRECAST BEAM FULL SPAN PRECAST FALSEWORK INCREMENTAL LAUNCHLANCED CANTILEVER
Front Upper Cross Beamin Lifting Position
Support Tower
Rear Upper Cross Beamin Lifting Position
Direction of Erection
Rear Lower Cross Beam
Front Lower Cross Beam
Rear Support Leg
Beam Delivery at Ground Level
Main Truss
N-2 N-1 N
PRECAST BEAM
PRECAST SEGMENTAL ERECTION
PRECAST BEAM METHOD
VSL has considerable experience in theerection of various precast beam structures.Methods of erection have been developedfollowing extensive studies relating to
site constraints. Generally, the delivery ofprecast beams to the erection front is thedeterminant that influences the method of
erection system to be adopted. VSL hasutilised a variety of launching girders, beamlaunchers and lifting frames, capable ofreceiving precast beams directly behind,
below or in parallel to the erection system.I beams, U beams and T beams have beenerected extensively.
In addition to the erection of primarystructural members, VSL has also beenresponsible for the complete constructionof bridge decks including placement of
precast planks, and insitu works. VSLsexperienced project specific management,supervisory and technical teams facilitate
16
N-S Link - Jakarta(1989-1991)2,000 beams
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FEATURES & ADVANTAGES
RM TRAVELLER FORM SYSTEM STAY CABLEHEAVY LIFTING
Front Support Leg
N+1
Description
Typical Erection Cycle Duration: 2-Shift Cycle (Hours)
Shift - 1(10 Hour Shift)
Shift - 2(10 Hour Shift)
Lift and place 1stbeam (outer most) with
precast plank on top
Lift and place 2ndbeam with precast plank
on top
Lift and place 3rdbeam with precast plank
on top
Lift and place 4thbeam with precast plank
on top
Reposition the intermediate planks into
final position
Move gantry to center viaduct then launch
to next span
rates of erection often exceeding one spanper day.With the precast beam method, strand andwinch lifting units are utilised, providing
safe and precise placement of precastelements, allowing multiple degrees ofalignment and efficient rates of erection.
Tandem lifting of full span precast beams withcranes has also been adopted facilitating thelifting of large loads often exceeding 100tonnes in weight and 40m in length.
17
alau Island Bridge - Palau (2003-2005)000m2 of deck, 52 beams
Cebu Coastal Road - Philippines (2001-2002) 24,000m2 of deck, 320 beams
arasin Bridge - Phuket, Thailand (1991-992) 7,800m2 of deck, 182 beams
East Coast Parkway - Singapore(1981)68,250m2 of deck, 180 beams
utong Lumut Coastal Highway - Brunei2001-2003) 6,100m2 of deck, 210 beams
Saraburi - Thailand (1994-1995)
Fast rates of erection.
Relatively simple erectiongantry, or crane erection.
Beam delivery possiblealong completed deck to rearof gantry, thus minimisingdisruption to existing trafficnetworks.
Small works crew size.
Geometry control is minimised.
Precast beam production isrelatively simple and requireslow levels of mechanisation.
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FEATURES & ADVANTAGES
RM TRAVELLER FORM SYSTEM STAY CABLEHEAVY LIFTING
N+2 N+3
Front Mobile Support
Front Fixed Leg
Support Beam
Description
Typical Erection Cycle Duration: 1-Day Cycle (Hours)
5 6 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 237
Delivery New Span from Yard to
Erection Site
Erection of New Span
Return Launching Carrier to Yard
Launching Carrier Available for
Yard Handling
Load New Segment intoLaunching Carrier
Load Transfer from Temporary to
Permanent Bearings
Prepare Permanent Bearings
for Grouting
Grout Permanent Bearings
of precast elements along the completeddeck reduces disruption to existing trafficnetworks and helps minimise groundimprovement works that would otherwise
be required to transport large elements atground level.
19
aiwan High Speed Rail C215 - Taiwan2000-2004) 260,000m2 of deck, 602 spans
aiwan High Speed Rail C215 - Taiwan2000-2004) 260,000m2 of deck, 602 spans
aiwan High Speed Rail C215 - Taiwan2000-2004) 260,000m2 of deck, 602 spans
Seven Mile Bridge - USA (1980-1982)130,000m2 of deck, 265 spans
MRT - Singapore (1985-1989)114,000m2 of deck, 1,000 spans
MRT - Singapore (1985-1989)114,000m2 of deck, 1,000 spans
Very high rate of production,with very high quality.
Minimal follow up works.
Full span production infactory environment allowsimprovements in quality ofprecast elements.
Delivery of elements to rearof gantry is possible alongcompleted deck thereforeminimising disruption to existingtraffic networks.
Reduced on site activities,improves safety and
environmental concerns.
Minimal additional temporaryworks are required.
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SPAN BY SPAN LIFTING FRAME CRANE PRECAST BEAM FULL SPAN PRECAST FALSEWORK INCREMENTAL LAUNCHLANCED CANTILEVER
Segment Delivery at Ground Level
Stressing PlatformSpan JackSpan Jack
N-2 N-1 N
Falsework Support
Temporary Support
Relocation of Falsework Support
FALSEWORK
PRECAST SEGMENTAL ERECTION
SPAN BY SPAN ERECTION ON FALSEWORK
VSL has adopted the falsework supportmethod on many precast segmentalprojects.Dependent upon the imposed loading and
the effective height, conventional scaffoldsupport or heavy shoring systems areutilised. Hydraulic systems are incorporated
to enable temporary segment support,alignment and load transfer onto piers.Typically, segments are loaded onto thefalsework support using suitable craneage.
However, if access is limited, VSL has alsodeveloped alternative solutions for thehandling and loading of segments. VSL
engineering and production staff conductextensive logistic studies relating to siteaccess, segment handling and temporaryfoundation needs. Modular support systems
are adopted to minimise relocation durationsand to optimise erection rates. Long spansupport structures are often developed to
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Deep Bay Link - Hong Kong(2004-2005)108,000m2of deck, 3,014 segments
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FEATURES & ADVANTAGES
RM TRAVELLER FORM SYSTEM STAY CABLEHEAVY LIFTING
N+1
Description
Typical Erection Cycle Duration: 4-Day Cycle (Days)
1 2 43
Installation of Scaffold Support
Erection of Segments
Alignment and Gluing
Post Tensioning Operations
Load Transfer onto Permanent Bearings
cater for road or rail crossings. Supportstructures incorporate access and workingplatforms and may include suspendedcontainments to manage falling debris.
Typical erection rates are up to one spanevery three days.
21
West Rail - Hong Kong (1999-2002)16,667m2 of deck, 8,642 segments
Pennys Bay - Hong Kong (2003-2004)16,240m2 of deck, 627 segments
eep Bay Link - Hong Kong (2004-2005)08,000m2 of deck, 3,014 segments
Pennys Bay - Hong Kong (2003-2004)16,240m2 of deck, 627 segments
West Link - Australia (2004-2005)6,000m2 of deck, 3,013 segments
East Rail - Hong Kong (2000-2003)58,320m2 of deck, 4,449 segments
Minimised engineeringrequirements are possible.
Modular support system canbe relocated with ease andrelatively quickly.
Work can proceed on multiplework fronts.
Production crew size is fullyutilised and optimised.
Good access is provided to allwork fronts.
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SPAN BY SPAN LIFTING FRAME CRANE PRECAST BEAM FULL SPAN PRECAST FALSEWORK INCREMENTAL LAUNCHLANCED CANTILEVER
Launching Nose
Casting Bed
Vertical Reaction Beams
Scaffolding for Access
Pulling Jack
Direction of Launch
Monolithic or Stressed Connectionto 1stSegment
Launching Bearings
Lateral Restraint
N N+1 N+2 N+3
INCREMENTAL LAUNCH
INSITU CONSTRUCTION
INCREMENTAL LAUNCHING METHOD
The principle of the incrementally launchedbridge consists of building the superstructuresegments in a casting yard located behind
the bridge abutment. Each segment is
matchcast against the previous one andprestressed to the section of superstructurealready built. The entire superstructure is
then jacked forward a distance equal tothe length of this segment. This processis repeated until the bridge is in its finalposition. Additional continuity prestress is
then installed and the temporary bearingsare replaced by the permanent bearings.This form of construction can be used for
bridges having constant cross sectionalshape throughout their length. The bridgeshould be straight or have constanthorizontal and vertical curvatures.
The incrementally launched bridge hasseveral advantages. It eliminates thetraditional scaffolding required for supporting
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Kemena Bridge - Malaysia(2003-2005)32-53m of span length, 4,947.6m2 of surface
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FEATURES & ADVANTAGES
RM TRAVELLER FORM SYSTEM STAY CABLEHEAVY LIFTING
(A)(B)
(A)
(A)
TYPICAL CONSTRUCTION SEQUENCE
Cast segment (A),install launching nose,install pulling units
Pull segment (A) forwardusing pulling jacks at-
tached to reaction beam
Construct segment (B), re-peat stage and for remaining segments
Description
Typical Construction Cycle Duration: 8-Day Cycle (Days)
1 2 4 5 63 7 8
Launch Segment
Strip and Clean Forms
Install Base and Web Rebar
Install Web Forms
Concrete Base and Webs
Install Inner Forms
Install Top Slab Rebar
Concrete Top Slab
Curing
Stress P.T.
the formwork. This is particularly valuablefor projects with high piers, in urban areas,spanning over deep water, over roads andover railways. Most of the construction
operations take place in the same location,which may be organised as a precastingyard. The precasting work is thus more
easily supervised, giving a high quality ofworkmanship. However, it should be notedthat the post-tensioning requirements forthe launching operations usually result in
higher quantities when compared with otherconstruction methods.
23
ybny Potok - Czech Republic (2005)8m of span length, 10,858m2 of surface
Brides Glens Bridge - Ireland (2003-2004)45.9-65m of span length, 3,200m2 of surface
Caguanas River Bridge - Puerto Rico(1981) 385m of bridge length
ampanies Sengkang Flyover - Singapore (2002-2003)4.5-63m of span length, 10,623.85m2 of surface
Concentrated work frontoptimises craneagerequirements.
Site constraints such as poorground conditions or groundtraffic restriction can beminimised.
Minimal temporary works.
Seven-day cycle is achievable ifovertime is allowed.
Require only a moderateinvestment in specialised
equipment such as launchingnose, launching jacks,conventional jacks, launchingbearings and guides.
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SPAN BY SPAN LIFTING FRAME CRANE PRECAST BEAM FULL SPAN PRECAST FALSEWORK INCREMENTAL LAUNCHLANCED CANTILEVER
Front Transverse Truss
Anchoring Jack
Rail Beam
Main Frame
Lower Rear Transverse Beam
Stitching Beam
Closure Stitch FormworkEnd Span Falsework
Form Traveller
Lower Front Transverse Beam
Outer Roller Beam
Form Traveller
N N+1
INSITU CONSTRUCTION
FORM TRAVELLER METHOD
Developed from VSLs earlier form travellersystems, VSL has produced a standardisedmodular form traveller system, applicableto most contemporary bridge designs. This
highly flexible system allows efficient andrepeated use on bridges with different crosssections. A variety of casting lengths can be
adopted to suit engineers designs.Mechanical and hydraulic systems builtinto the form traveller system ensureprecise control of the bridge during
construction. The lightweight modularsystem requires minimal support craneageduring assembly, erection and relocation.
Unobstructed working platforms andaccess are incorporated into the formsystem.Reinforcement and concreting operations
have been optimised by minimisingobstructions caused by the form traveller.Typical cycles of 5 days per pair of segments
24
Second Gateway Bridge Australia (2008-2010)29,526m of deck, 700 precast elements
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SPAN BY SPAN LIFTING FRAME CRANE PRECAST BEAM FULL SPAN PRECAST FALSEWORK INCREMENTAL LAUNCHLANCED CANTILEVER
INSITU CONSTRUCTION
VSL FORM SYSTEMS
VSL has considerable experience in awide variety of insitu form system rangingfrom self climbing form systems utilised
for pier and pylon construction to largespan underslung movable scaffold supportsystems.To complement any precast erection
operation, VSL is also able to providedetailed design, supply and operation ofprecast cells required for precast segmental
bridge decks, precast beams, and also fullspan precast elements. Recently, on theTaiwan High Speed Rail Project, VSL wasresponsible for the complete establishment
and operation of the casting yard includingreinforcement and concreting operations.VSL form systems are generally modular,
light weight and provide clear unobstructedaccess to all necessary working areas.Mechanised VSL Form Systems facilitatecasting of highly complex structures with
26
Photos of this page:Stonecutters Bridge - Hong Kong
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RM TRAVELLER FORM SYSTEM STAY CABLEHEAVY LIFTINGFORM SYSTEM
variable geometric properties, and producehigh quality finishes often required byclients.
VSL managed casting yards regularlyachieve precast segmental production ratesof up to one segment per day, per cell.The VSL Climb Form System will generally
achieve an optimal cycle of three days perfour meter lift, however, due to the modulararrangement of the system, variable lift
heights can be accommodated with relativeease up to a maximum lift height of sixmeters.
27
ght Rail Transit - Dubai (2007-2009)asting Yard
Tsing Ma Bridge - Hong KongPier climbform
eppel Bay Bridge - Singapore (2007)132m of deck, 77 bridge segments
Kisosansen Bridge - JapanMatch cast short line cells
akse Bridge - Laosatch cast long line
Metro de Santiago - ChileMatch cast long line
hnpyung Bridge - KoreaSS
Taiwan High Speed Rail C215 - TaiwanPretensioning bed and form
Taiwan High Speed Rail C215 - TaiwanPretensioning bed and form
Bandra Worli - IndiaMatch cast short line cells
Metro de Santiago - ChileMatch cast long line
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SPAN BY SPAN LIFTING FRAME CRANE PRECAST BEAM FULL SPAN PRECAST FALSEWORK INCREMENTAL LAUNCHLANCED CANTILEVER
HEAVY LIFTING APPLICATIONS FOR BRIDGE
For economic or technical reasons, todaysbridge structures are often assembled fromlarge, heavy, pre-fabricated elements.For projects in which cranes or other
conventional handling equipment cannotbe used because of excessive weight,dimensions or space limitations, VSLHeavy Lifting will often provide the mosteffective solution.
VSL Heavy Lifting provides contractors,engineers and owners with a broad rangeof advantages, including:
Economy and efficiency, through customdesigned solutions.
Rel iab i l i t y , based upon soundengineering and three decades of
experience.
The highest level of safety through theuse of advanced and reliable hydraulicequipment.
Unique Solutions
VSL will plan lifting, horizontal jacking,or lowering operations and design the
necessary temporary structures to suitthe requirements of the projects. Soundengineering, clear thinking, the ability toinnovate, and years of successful experienceprovide a guarantee of reliable and cost-
effective solutions.
Safety
The safety of personnel and componentsare VSLs first priority. Specialisedhydraulic lifting equipment is designedfor the highest level of reliability, andall equipment is rigorously tested andserviced through VSLs quality controland maintenance program. VSL fieldservices are also based upon a totalcommitment to safety.
The extensive experience of VSL personneland VSLs exceptional track record providefurther assurance of reliable performance.
FlexibilityVSLs range of equipment provides thecapability to lift or lower single loadswell in excess of 10,000t and includes alarge range of hydraulic jacks, pumps,controls units, monitoring devices, andmodular lifting/jacking frames. Thus, VSLhas both the capability and flexibilty toperform virtually any project requiringlifting, lowering or horizontal jacking.
The VSL Service Package
VSL offers a complete range of servicesfor the planning, engineering, equipmentsupply and execution of any heavy liftingproject. VSL Heavy Lifting services providedthroughout the world include:
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Stonecutters Bridge - Hong Kong (2007-2009)Lifting and shifting of pier table segments and simultaneous lifting of a double deck span of each pylon
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FEATURES & ADVANTAGES
RM TRAVELLER FORM SYSTEM STAY CABLEHEAVY LIFTINGHEAVY LIFTING
nernillo II Bridge - Mexico(2000)fting of 3 arched steel trusses (600t each)
CONSTRUCTION
Feasibility studies and preliminaryconsultation for lifting, horizontal
jacking and lowering operations.
Project design and p lanning,equipment specification, schedulingand budgeting.
Design, manufacture and supply ofspecial equipment and temporarystructures, if required.
Leasing and operation of VSLequipment and execution by VSLor others.
The planning of a heavy lifting operationshould be started as early as possible. Earlyinvolvement of VSL specialists will result in a
handling scheme that optimises the projectseconomy, efficiency and schedule.
29
Industrial Ring Road - Thailand (2005-2006) Lifting of 500t bridge deck segment
heik Zayed Bridge, Abu Dhabi - UAE2009)Turning and lifting bridge segments tonal position.
Hochdonn Railway Bridge - Germany(2006)Lowering of the steel structure(1.465t, lifting and tilting operations.
essnerbrck - Switzerland (2006)iding of Bridge 3500t for 23m
Serebryany Bor-Moskau-Ru Bridge - Russia(2008)VSL Heavy lifting units with hydraulic pumps and strands
oire River Bridge - Francefting of centre span (2,400t)
Economy and efficiency throughcustom designed solutions.
Suitable for any heights andany loads.
High level of safety as load isalways secured mechanically.
Reliability based on 35 years ofsolid experience.
High flexibility with lifting unitsfrom 10t to 600t capacity.
Lifting levels and loads withextremely tight tolerances aremonitored and maintained with
highly precise computer-aidedcontrol system.
Very high capacity to theselfweight ratio.
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SPAN BY SPAN LIFTING FRAME CRANE PRECAST BEAM FULL SPAN PRECAST FALSEWORK INCREMENTAL LAUNCHLANCED CANTILEVER
STAY CABLE BRIDGE CONSTRUCTION
VSL SSI 2000 STAY CABLE SYSTEM
The VSL SSI 2000 Stay Cable System isacknowledged as being one of the leading
systems currently available worldwide. Thesystem is based around the proven VSLstrand and wedge anchorage technologyand is designed to meet the most stringentcriteria offering high fatigue resistance,
excellent corrosion protection, easymonitoring and maintenance. Installation
and replacement is carried out using strandby strand method which has the benefit ofrequiring very little space and which utilisesrelatively light weight equipment.In the basic configuration the system
incorporates greased and sheathedmonostrands contained within a continuous
external HDPE stay pipe, with no grouting inthe cable. Additional enhancements can beoffered including; metalisation (galvanising)of the monostrands for additional corrosionprotection, coloured HDPE stay pipes,
30
Industrial Ring Road - Thailand(2005-2006)Main span length: 398m & 326m
aipei Ring Road - Taiwan(2008)ain span 200m, 546t of stay cables
Sucharskiego Bridge- Poland (2000-2001)Main span length: 230m
Europa Bridge - Portugal (2000-2002)Main span length: 185.6m
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FEATURES & ADVANTAGES
RM TRAVELLER FORM SYSTEM STAY CABLEHEAVY LIFTING STAY CABLE
helical ribbing on the stay pipes to reducerisk of wind rain induced cable vibrations,
and the VSL Friction Damper one of the mostefficient and robust forms of cable dampingavailable.In addition to the design, supply andinstallation of the stay cable system, VSL is
able to offer clients a full range of specialistbridge construction services from stage by
stage construction analysis to the actualconstruction of the entire superstructureincluding the design and supply of thenecessary temporary works and constructionequipment.
31
Wadi Leban Bridge - Saudi Arabia (1997)ain span length: 405m
Neva Bridge - Russia (2002)Main span length: 382m
eldar Bridge - Colombia (2003)ain span length: 120m
US Grant Bridge - USA (2003)Main span length: 267m
ichong Yiling Bridge - Hubei, China (2001)ain Span Length: 348m
Safti Bridge - Singapore (1995)Main span length: 99m
aney Bridge - Ireland (2002)ain span length: 109m
Uddevalla Bridge - Sweden (1998)Main span length: 414m
Rads La Goulette Bridge - Tunisia(2007) Main span length 120m
High fatigue resistance.
Full encapsulation of strandinside the anchorage.
Factory applied individualprotection treatment, up to 100years design life in the mostaggressive environments.
Compatible with modernconstruction methods; compactanchorages fully prefabricated
in workshop, single strandinstallation with light equipment,easy force monitoring and
adjustment.
Faster installation and erectioncycles, reduced maintenance.
Designed to receive in thefuture vibration dampingsystems if necessary.
Ability to remove and to replaceindividual strands if necessary.
In some cases, the SSI
2000 Saddle can replace theanchorage in the pylon, easingconsiderably its detailing andconstruction.
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CREATING SUSTAINABLE SOLUTIONS TO
Each project presents unique challenges and, in
recognition of this, members of VSLs technical staff
work with contractors, owners and engineers to
evaluate projects and determine optimal solutions.
VSLs Technical Centres in Asia and Europe help
the group around the world to save large amounts
of new fabricated steel by recycling existing erection
equipment for subsequent use on other bridge and
viaduct construction projects.
VSL engineers have a
cultural and professional
responsibility to design
safe, economical and
buildable structures that
meet the current and future
needs of their owners
and the public. VSLs
sustainable designs aim
to reduce the amount of waste material, minimise the
social impact of congestion caused by construction and
cost less per year of service over the life of the bridge.
Given VSLs potential involvement in such a wide rangeof engineering works related to bridges and viaducts,
it is important to contribute to environmental protection
and to look for savings and recycling
opportunities. This issue has become
an integral part of VSL
Technical Centres
day-to-day activities.
VSL Engineering
For VSL, sustainable construction
means changing the way we do
business: providing ever safer
methods of construction and design,
using methods and technologies that
require less virgin material and lessenergy, while mitigating pollution
and waste. VSL aims to produce
schemes that ultimately require
less maintenance and are easier to
recycle, yet still achieve the required
quality.
Many of VSLs systems and
technologies are already contributing
significantly to that target. VSL
however does not limit the effort to
construction techniques but also
strives to improve every aspect of
its activities for the benefit of all,
and particularly for VSL clients
concerned with such issues.
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GETHERVSL Post-tensioning VSL Stay cables
Post-tensioning is a method of reinforcing
(strengthening) concrete with high-strength steel
strands or bars, typically referred to as tendons.
Post-tensioning is applied to large structures
including bridges as well as others such as ofces
and apartment buildings, parking structures, slabs,
sports stadiums, rock and soil anchors and water
tanks. In many cases, post-tensioning pushes
the limits of conventional construction and allows
schemes that would otherwise be impossible
because of either site constraints or
architectural requirements.
The use of post-tensioning enables
better use of materials by makingthe concrete work mainly under
compression and the steel under
tension. The result is that materials
are used where they are strongest
and most efcient, thus reducing
the volume of materials required
to build a structure.
Structures are less vulnerable
to corrosion as there are
substantially less or no
cracks, because the concrete in
post-tensioned structures is
generally compressed.
In addition, the environment
provided by the concrete gives
the reinforcing steel natural
protection against corrosion
and so structures require
less maintenance and are
more durable.
The use of the VSL PT-
PLUSsystem with corrugated
plastic ducts is recommended for
applications requiring enhanced corrosion protection
and improved fatigue resistance of the tendons.
Please refer to the VSL Post-tensioning solutions
brochure for further information.
Cable-stayed structures are ideal for spans longer than
typically seen in cantilever bridges and shorter than those
requiring a suspension bridge. This is the range in which
cantilever spans would rapidly grow heavier if they werelengthened, and in which the spans would be too short to
be economical as a suspension bridge.
VSL Stay cables have a design life of 100 years even
in the most aggressive environments. Elements are
fully replaceable without requiring modications to the
structure. All the materials used are carefully selected and
all components are detailed to meet the highest durability
criteria. In addition, the modular nature of the VSL Stay
Cable System helps reduce the environmental impact
of maintenance operations by minimising the amount of
waste generated when parts have to be replaced during
the structures life.
Please refer to the VSL SSI 2000
Stay Cable System brochure
for further information.
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VSL Dampers for bridges VSL Heavy lifting
VSL specialised bridgeequipment
Modern cable-stayed structures
have to accommodate increased
dynamic demands on their cables.
The most versatile means of
controlling vibrations is to increase
the structural damping ratio of the
cables by installing VSL Dampers.
In addition to their high efciency,
they are adaptable, of great durability
and have only very low maintenance costs, achieved by
reducing the number of moving parts.
VSLs Gensui and Friction Dampers are based on the
principle of energy dissipation, achieved
respectively by the deformation
of special rubber pads or by thefriction between a steel plate and a
special composite pad. In contrast,
hydraulic dampers are mechanically
more complex, subject to oil leakage
and so require substantially more
maintenance.
Furthermore, VSL Dampers mitigation
of vibrations reduces the risk of material fatigue in the
stays and in the bridge, which in turn reduces the need
for maintenance during the service life of the structure.
Dampers make a vital contribution to increasing the life
expectancy of the structures where they are installed.
Please refer to the VSL Damping Systems for Stay
Cables brochure for further information.
The VSL Heavy lifting methods using hydraulic jacks and
strand or bar tendons are part of VSLs core business. The
approach is very versatile and allows the movement of very
heavy loads safely and economically.
The application of strand liftingunits for lifting, lowering and the
movement of heavy loads generally
involves a custom-made method for
every project. The resources are
mostly reused and generate the
minimum environmental impact.
Energy consumption is low. Other important factors are safety
and ease of access. VSLs heavy lifting equipment can be
placed in locations where no crane could reach. The strand
lifting systems can be adapted to every kind of technical
requirement and environment to move very heavy loads easily.
Loads of 30,000t have been moved without any problems.
Please refer to the VSL Heavy Lifting brochure for further
information.
A bridge may be repaired or strengthened with external post-
tensioning, cable stays, concrete and steelwork treatment,
expansion joints, structural bearings and seismic devices.
Repairing and strengthening minimises waste and
conserves natural resources, instead of destroying them
by building anew. Strengthening enables VSL to extend
the life of bridges and viaducts, enhancing their capacity to
accommodate new loading requirements.
Please refer to the VSL Repair, Strengthening and
Preservation brochure for further information.
Construction of each bridge is different in
many ways. Each can benet from VSLs
specialised, tailored bridge equipment to
achieve a smoothly phased constructionoperation.
VSL also endeavours to use standardised
construction equipment for customised
applications, allowing a better reuse
of machinery from one project to the next. Although
almost every bridge project is a prototype, the erection
equipment designed by VSL to suit individual applications
is subsequently re-engineered for other projects. It might be
used in similar ways or for very different methods all made
possible thanks to the strengths and experience of VSLs
technical centres. This allows reuse of the same equipment
many times over several years, achieving substantial
reductions in the amount of new temporary works required
on the projects VSL is involved in.
VSL Repair or strengtheningsolutions
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Headquarters
VSL International Ltd.
Saegestrasse 76
CH-3098 Kniz
Switzerland
Phone: +41 58 456 30 00
Fax: +41 58 456 30 95
VSL LOCATIONSwww.vsl.com
AmericasARGENTINAVSL Sistemas Especiales deConstruccin Argentina SABUENOS AIRESPhone: +54 11 4326 06 09Fax: +54 11 4326 26 50
BOLIVIAPostensados de BoliviaSAN MIGUEL, LA PAZPhone: +591 2 27 70 338Fax: +591 2 27 96 183
CHILEVSL Sistemas Especiales deConstruccin S.A.SANTIAGO
Phone: +56 2 571 67 00Fax: +56 2 571 67 01
COLOMBIASistemas Especialesde Construccin Ltda.BOGOTAPhone: +57 1 620 96 34Fax: +57 1 620 58 16
MEXICOVSL Corporation Mexico S.A de C.VMEXICOPhone: +52 55 55 11 20 36Fax: +52 55 55 11 40 03
PERUSistemas Especialesde Construccin Peru S.A.LIMA
Phone: +51 1 349 38 38Fax: +51 1 348 28 78
UNITED STATESVStructural LLCBALTIMORE, MDPhone: +1 410 850 7000Fax: +1 410 850 4111
VENEZUELAGestin de Obrasy Construcciones C.A.CARACASPhone/Fax: +58 212 941 86 75
Africa
EGYPTMatrix Engineering CompanyCAIROPhone: +20 2 344 19 00Fax: +20 2 346 04 57
SOUTH AFRICATsala-RMS Construction Solutions(Pty) LtdJOHANNESBURGPhone: +27 11 878 6820Fax: +27 11 878 6821
Europe
AUSTRIAGrund- Pfahl- und Sonderbau GmbH
HIMBERGPhone: +43 2235 87 777Fax: +43 2235 86 561
CROATIATehnicki projekt d.o.o.ZAGREBPhone: +385 1 4664 586Fax: +385 1 4664 549
CZECH REPUBLICVSL Systems (CZ) Ltd.PRAGUEPhone: +420 2 51 09 16 80Fax: +420 2 51 09 16 99
FRANCEVSL France S.A.LABGEPhone: +33 05 61 00 96 59Fax: +33 05 61 00 96 62
GERMANYVSL Systems GmbHBERLINPhone: +49 30 530 28 06-0Fax: +49 30 530 28 06-99
NETHERLANDSHeijmans Beton en Waterbouw B.V.ROSMALENPhone: +31 73 543 66 02Fax: +31 73 543 66 11
NORWAYSpnnarmering Norge ASRUDPhone : +47 98 21 02 66Fax : +47 67 17 30 01
POLANDVSL Polska Sp. z.o.o.WARSZAWAPhone : +48 22 849 22 09Fax : +48 22 849 02 23
PORTUGALVSL Sistemas PortugalPre-Esforo, Equipamentoe Montagens S.A.
S. DOMINGOS DE RANAPhone: +351 21 445 83 10Fax: +351 21 444 63 77
VSL GEOSistemas de Aplicaoem Geotecnia SAS. DOMINGOS DE RANAPhone: + 351 21 445 83 10Fax: + 351 21 445 83 28
SPAINCTT StrongholdBARCELONAPhone: +34 93 289 23 30Fax: +34 93 289 23 31
VSL-SPAM, S.A.BARCELONAPhone: +34 93 846 70 07
Fax: +34 93 846 51 97
SWEDEN / NORWAYInternordisk Spnnarmering ABVSTERHANINGEPhone: +47 98 21 02 66Fax: +47 67 17 30 01
SWITZERLANDVSL (Switzerland) Ltd.SUBINGENPhone: +41 58 456 30 30Fax: +41 58 456 30 35
VSL (Suisse) SASAINT LEGIERPhone: +41 58 456 30 00Fax: +41 58 456 30 95
TURKEYMega Yapi Construction & TradeCo. LtdANKARAPhone: +90 312 490 90 66Fax: +90 312 490 90 55
UNITED KINGDOMVSL Systems (UK) Ltd.LUTONPhone: +44 148 040 44 01Fax: +44 148 040 44 02
Middle East
SYRIAKahaleh for consulting engineeringDAMASCUSPhone: +963 232 47 02Fax: +963 11 22 14 595
UNITED ARAB EMIRATESVSL Middle East LLCDUBAI, UAEPhone: +971 4 885 7225Fax: +971 4 885 7226
DOHA, QATARPhone: +974 423 1117Fax: +974 423 1100
Asia
BRUNEIVSL Systems (B) Sdn. Bhd.BRUNEI DARUSSALAMPhone: +673 2 380 153 / 381
827Fax: +673 2 381 954
CHINA PRCVSL (China) Engineering Corp., Ltd.HEFEIPhone: +86 551 382 29 18Fax: +86 551 382 28 78
HONG KONGVSL Hong Kong Ltd.CHAI WANPhone : +852 2590 22 88Fax : +852 2590 02 90
Intrafor Hong Kong Ltd.CHAI WANPhone : +852 2836 31 12Fax : +852 2591 61 39
FT Laboratories Ltd.PING CHEPhone: +852 2758 48 61Fax: +852 2758 89 62
INDIAVSL India PVT Ltd.CHENNAIPhone: +91 44 4225 11 11Fax: +91 44 4225 10 10
INDONESIAPT VSL IndonesiaJAKARTAPhone: +62 21 570 07 86Fax: +62 21 573 75 57
JAPANVSL Japan CorporationTOKYOPhone: +81 3 3346 8913Fax: +81 3 3345 9153
KOREAVSL Korea Co. Ltd.SEOULPhone: +82 2 553 8200Fax: +82 2 553 8255
MALAYSIAVSL Engineers (M) Sdn. Bhd.KUALA LUMPURPhone: +603 7981 47 42Fax: +603 7981 84 22
PHILIPPINESVSL Philippines Inc.PASIG CITYPhone/Fax: +632 723 13 95
SINGAPOREVSL Singapore Pte. Ltd.SINGAPOREPhone: +65 6559 12 22
Fax: +65 6257 77 51
TAIWANVSL Taiwan Ltd.TAIPEIPhone: +886 2 2759 6819Fax: +886 2 2759 6821
THAILANDVSL (Thailand) Co. Ltd.BANGKOKPhone: +66 2 679 76 15 - 19Fax: +66 2 679 76 45
VIETNAMVSL Vietnam Ltd.HANOIPhone: +84 4 3976 5088Fax: +84 4 3976 5089
HO CHI MINH CITYPhone: +84 8 810 6817Fax: +84 8 810 6818
AustraliaVSL Australia Pty. Ltd.NEW SOUTH WALESPhone: +61 2 9484 5944Fax: +61 2 9875 3894
QUEENSLANDPhone: +61 7 3265 64 00Fax: +61 7 3265 75 34
VICTORIAPhone: +61 3 979 503 66
Fax: +61 3 979 505 47SOUTH AUSTRALIAPhone: +61 8 8252 1900Fax: +61 8 8252 1911
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