accelerating bridge construction with prefabricated bridge ......prefabricated bridge element •...
TRANSCRIPT
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2012 Annual Virginia Concrete Conference
FHWA Prefabricated Bridge Elements & Systems Update
March 8, 2012
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Every Day Counts - Program
Going Greener
Shortening Project Delivery
Accelerating Deployment Technology
and Innovation
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– Design-build – Construction Manager/General Contractor – Planning and Environmental Linkages – Legal Sufficiency Enhancements – Expanding Programmatic Agreements – In Lieu Fees and Mitigation Banking – Clarifying the Scope of Preliminary Design – Flexibilities in Right of Way – Flexibilities in Utilities – Enhanced Technical Assistance on EIS
Shortening Project
Delivery
Accelerate the Deployment of Technology and
Innovation
– Safety Edge – Warm Mix Asphalt – Adaptive Single Control – Prefabricated Bridge Elements and Systems – Geosynthetic Reinforced Soil Integrated Bridge
EDC Initiatives
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EDC and PBES/ABC
ABC
Preliminary
Design
Utilities
NEPA/EIS
Programmatic Agreements
Geotechnical
Solutions
Contracting Methods
PBES
Right of Way
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“The EDC program has paved the way to allow bridge practitioners the opportunity to advance PBES and other innovations into the mainstream of the bridge industry. “
Opportunity!
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Prefabricated Bridge Elements & Systems (PBES)
1) Structural Components built:
– Offsite, or
– Adjacent to alignment
2) Include features that reduce:
– Onsite construction time
– Mobility impact time
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• Safer:
– Public
– Contractor Personnel
• Improve Quality:
– Off the Critical Path
– Controlled Environment
• Build in an accelerated
manner more efficiently
Benefits
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Other Reasons to use PBES
Remote Locations Limited Construction Season
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Paradigm Shift
PBES becomes the standard method of bridge construction, and the use conventional construction methods - such as on-site CIP operations, are used in a limited manner.
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• Aging Infrastructure
• Increased Traffic Volume
• Increased Work Zones
Congestion Costs • 4 billion hours/year
• 3 billion gallons/year
• $80 billion/year
Challenges – current/future
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Elements vs. Systems
Elements Systems
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Deck Elements
Examples: • Full-depth precast deck panels • FRP deck panels • Steel grid decks • Aluminum deck panels
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Beam Elements
Deck Beam Elements: • Modular beams with decks • Adjacent deck bulb-tee beams • Adjacent double tee beams • Adjacent box beams • Adjacent slab beams
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Beam Elements
Full-Width Beam Elements: • Truss span without deck • Arch span without deck • Precast segmental
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Pier Elements
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Abutment & Wall Elements
Examples: • Precast backwalls, wingwalls, footings • Sheet piling – steel or precast • Precast full-height wall panels • MSE walls
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Miscellaneous Elements
Examples: • Precast approach slabs • Prefab parapets • Closure pours • Overlays
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Prefabricated Systems
Systems: rolled, launched, slid, etc.
• Superstructure • Superstructure/pier • Total bridge
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CBC Methods
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Raise the Bar PBES:
Pile Lagging
PBES:
Grouted Couplers
PBES:
Pile Pockets
PBES
Conventional
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Implementing PBES
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PBES 2012 Goals
• 100 cumulative bridges have been designed and/or constructed rapidly using PBES
• 25 percent of bridge projects authorized using Federal-aid have at least one major prefabricated bridge element
• PBES decision making framework in the
design process and 20 projects in 3 years
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EDC Goals
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What they are selecting
0 5 10 15 20 25 30
Beams: more efficent shapes
Partial-depth deck panels
Full-depth deck panels
Pier cap, Column and/or Footing
Abutment, Wingwalls
1st Quarter 2011
0 5 10 15 20 25 30 35
Beams: more efficent shapes
Partial-depth deck panels
Full-depth deck panels
Pier cap, Column and/or Footing
Abutment, Wingwalls
2nd Quarter 2011
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PBES Tools - website
www.fhwa.dot.gov/bridge/abc/
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Publications
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Publications - future
PBES
Planning
Construction
Contracting
Engineering
Materials
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Webinar Training - Industry
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Webinar Training - NHI
4/2011 UHPC
5/2011
Decision Making 8/2011
PC Bent System for Seismic 10/2011
MassDOT Fast 14
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Webinar Training - FIU
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Webinar Training - FIU
Construction Contractor Series #1: Experiences with ABC Projects in Texas
Thursday, March 15, 2012
1:00 to 2:00 p.m.
http://www.abc.fiu.edu/
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PBES Deployment Team
Workshops Scanning Tours Project Reviews Project Showcases Regional Peer Exchanges
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Project Showcases
3/2011 Utah DOT – Sam White
7/2011
Mass DOT – Fast14 10/2011
Iowa DOT – Kegs Creek 01/2012 Nevada DOT – West Mesquite
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DC
N.E. Region
S.W. Region
M.N. Region
N.W. Region
PR
S.E. Region
PBES/ABC Regional Exchanges
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National ABC Project Exchange
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Thank You!
FHWA Benjamin Beerman, P.E.
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Back Up Slides
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Project Showcases
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PBES Deployment Team
5/2011 Illinois – PBES/ABC
5/2011 Missouri – Deck Panels
6/2011 Illinois – I-57 over SR I13
11/2011 Idaho – Deck Panels
11/2011 Nevada – NEON Project
01/2012 Hawaii – Substructure
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Composite Industry