odotechniki ltd underground works

Address: 59, 3rd September Str. GR 10433, Athens, Greecee-mails: [email protected], [email protected]

Tel. +30 210 8228052, +30 210 8222127, Fax. +30 210 8233003

ODOTECHNIKI LTDCONSULTING ENGINEERS www.odotechniki.gr

UNDERGROUND WORKSUNDERGROUND WORKS

DESIGNDESIGN MODELLINGMODELLING ANALYSISANALYSIS CONSTRUCTION CONSTRUCTION FOLLOW UPFOLLOW UP

mailto:[email protected]


http://www.odotechniki.gr/

Design, Consulting, Construction Follow Up and Subcontracting Services on:



Tel. +30 210 8228052, +30 210 8222127, Fax. +30 210 8233003

• State-of-the-art modelling and analysis;• Value Engineering solutions;• Design reviews and independent checks; • Design of tunnels and underground works;• Design of bridges and steel structures;• Design of buildings;• Design of retaining structures;• Design of foundations, embankments, reinforced soil structures, cuts, deep excavations;• Analysis and stabilization design of landslides and failures;• Analysis of rock fall and rock fall barriers design;• Programming and evaluation of geotechnical investigations and monitoring;• Geological & geotechnical interpretation reports;• Risk analysis in geotechnical and structural projects;• CAD services, providing drawings preparation, reinforcement tables and detailing.

Geotechnical & Structural experts

http://www.odotechniki.gr/



ODOTECHNIKI LTD – CONSULTING ENGINEERS

UNDERGROUND WORKS

DESIGN OFMAJOR PROJECTS

STATE OF THE ART DESIGN, MODELLING, ANALYSIS

CONSTRUCTION FOLLOW-UP AND CONSULTING


DESIGN OF MAJOR PROJECTS

PARTICIPATION IN MAJOR UNDERGROUND WORKS IN GREECE


• ATTIKO METRO (Athens metro), Geotechnical Consulting for lines 2 & 3, (constructed).• ATTIKI ODOS (Athens ring road), geotechnical-structural design of bridges, retaining

structures, cut & covers, tunnels, foundations, buildings, urban development projects, (constructed).

• EGNATIA ODOS, 700km major highway in northern Greece, geotechnical-structural design of tunnels, bridges, cut & covers, tunnels, special retaining structures, foundations, high embankments, cuts, landslide rehabilitation, (constructed).

• ANCIENT OLYMPIA RING ROAD, geotechnical-structural design, bridges, cut & covers, tunnels, special retaining structures, foundations, high embankments, (constructed).

• KORINTHOS-TRIPOLI-KALAMATA Highway, geotechnical-structural design of bridges, cut & covers, tunnels, special retaining structures, foundations, high embankments, cuts, landslide rehabilitation, (under construction).

• High speed RAILWAY KORINTHOS-PATRAS, geotechnical-structural design of bridges, cut & covers, tunnels, special retaining structures, foundations, (under construction).

• ATHENS-THESSALONIKI Highway (STYLIDA ring road), geotechnical-structural design of bridges, tunnels, special retaining structures, (under construction).

• North Highway of Crete island, geotechnical-structural design of bridges, cut & covers, tunnels, special retaining structures, foundations, (design in progress).

• THESSALONIKI external peripheral highway, geotechnical-structural design of tunnels, cut & covers, special retaining structures, (design in progress).

• Construction follow up consulting for EGNATIA TUNNELS: Veria - Polymilos section, (constructed).

• Construction follow up consulting fro ANCIENT OLYMPIA RING ROAD, (constructed).• Construction follow up consulting for TRIPOLI-KALAMATA Highway, (constructed).



ATTIKO METRO – ATHENS, GREECE – GEOTECHNICAL CONSULTING SERVICES



ATTIKI ODOS – ATHENS, GREECE



EGNATIA ODOS – NORTHERN GREECE



ANCIENT OLYMPIA RING ROAD – PELOPONNESE, GREECE



KORINTHOS-TRIPOLI-KALAMATA HIGHWAY – PELOPONNESE, GREECE



KORINTHOS-PATRAS HIGH SPEED RAILWAY – PELOPONNESE, GREECE



STYLIDA RING ROAD – CENTRAL GREECE



STATE OF THE ART DESIGN, MODELLING, ANALYSIS

DESIGN, MODELLING, ANALYSIS AND CONSULTING FOR UNDERGROUND WORKS



TUNNEL DESIGN

310.

82×

È:6

+900

.20

3.74 %3.74 % 4.62 %4.62 %


2D MODELLING AND ANALYSIS OF TUNNEL EXCAVATION

Simulation of slope tunnels (SRF procedure)

The influence of competent rock mass layer

Back analysis of twin tunnel excavation

Angle 60o

Simulation of the discontinuities in a stratified

rock mass



3D MODELLING AND ANALYSIS OF TUNNEL EXCAVATION WITH ANCHORS



3D MODELLING AND INVESTIGATION OF TWIN TUNNEL EXCAVATION

plastic strainvertical displacements





3D ANALYSIS AND INVESTIGATION OF TUNNEL FACE TREATMENT IN SHALLOW TUNNELS

-0.025

-0.020

-0.015

-0.010

-0.005

0.000

-4.00 -3.50 -3.00 -2.50 -2.00 -1.50 -1.00 -0.50 0.00x/ D

u z (

m)

Unsupported FaceForepoles Φ114/ 101Forepoles Φ159/ 1390.25nails/ sqm0.40nails/ sqmForepoles Φ114/ 101 & 0.25nails/ sqmForepoles Φ159/ 139 & 0.40nails/ sqm

Evaluation of different tunnel face treatment schemes based on the resulting

surface settlements for a shallow urban tunnel



3D MODELLING AND ANALYSIS OF TUNNEL EXCAVATION WITH FOREPOLING

Bending moment distribution of the forepole umbrella and influence of the tube length on the

bending moment



3D MODELLING AND ANALYSIS OF TUNNEL’S FINAL LINING

Creep strains

εcr

ttdt50%

0.5εcr,td

εcr,td

Για συγκεκρ ιμένο q / q f

εcr

εcr,td

0.50εcr,td

t50% td t

Stress level q/qf

SIMULATION OF THE GEOMATERIAL TIME-DEPENDENT BEHAVIOUR



PROBABILISTIC ANALYSIS IN TUNNELLING

0.00 0.10 0.20 0.30 0.40 0.50 0.60Μέσο ανηγμένο φορτίο, m p/po

0.0

20.0

40.0

60.0

80.0

100.0

Συντ

ελεσ

τής

μετα

βλητ

ότητ

ας, V

p (%

)

Mean tunnel load mp/po,m

Load

coe

ffici

ent

of v

aria

tion

Vp

(%)

Convergence - Confinement Method

Monte - Carlo Simulation

Variation of tunnel loads

0 .0 90 .0 18 0 .0 270 .0 36 0 .0a n g le ( )

25 0 .0

30 0 .0

35 0 .0

40 0 .0

45 0 .0

50 0 .0

55 0 .0

60 0 .0

65 0 .0

tunn

el lo

ad (k

Pa)

m in im um

m ax im um

av erage

Point Estimation Method

tunn

el lo

ad (

kPa)

Angle (o)

0.00 0.25 0.50 0.75 1.00 1.25 1.50Ανηγμένη αξονική δύναμη νd (Για Vp=10% & γp=1.35)

1.0

1.5

2.0

2.5

3.0

3.5

4.0

Επιμ

έρου

ς συ

ντελ

εστή

ς μό

νιμω

ν φ

ορτί

ων,

γp,

req

ECβ=5.61 (p f =10-8)β=5.20 (p f =10-7)β=4.75 (p f =10-6)β=4.26 (p f =10-5)

γg,EC=1.35

Reliability analysis of reinforced and unreinforced FL

Normalized final lining axial force

Tunn

el lo

ads

part

ial f

acto

r

0 .0 0 0 .1 0 0 .20 0 .3 0 0 .4 0 0 .5 0 0 .6 0V P

4 .00

4 .50

5 .00

5 .50

6 .00

6 .50

7 .00

7 .50

8 .00

relia

bilit

y in

dex

(β)

γ C = 1.5 0

γ C = 1.8 0

0 .0 0 0 .1 0 0 .2 0 0 .3 0 0 .4 0 0 .50 0 .6 0V P

0 .0 0

1 .0 0

2 .0 0

3 .0 0

4 .0 0

5 .0 0

6 .0 0

7 .0 0

8 .0 0

relia

bilit

y in

dex

(β) e /h

UC =0 .1 0

e /hUC =0.20

e /hU C = 0 .30

(a ) (b )

Coefficient of variation Vp

Relia

bilit

y in

dex

β

Reinforced final lining

Unreinforced final lining



EXPERIENCE ON GEOTECHNICAL AND TUNNEL DATA BASE DEVELOPMENT

Associates, Prountzopoulos, G. & Fortsakis, P., Participated in the Research on the behaviour of geomaterials during the construction of the Egnatia Odos tunnels and on the factors defining the final cost of construction (Egnatia Odos S.A.).

Marinos, V., Prountzopoulos, G., Fortsakis, P., Koumoutsakos, D. & Papouli, D. (2012), Tunnel Information and Analysis System: A geotechnical database for tunnels. Geotechnical and Geological Engineering. doi: 10.1007/s10706-012-9570.



TUNNEL AND CULVERT REHABILITATION



ON SITE FOLLOW UP ENHANCES COMPANY’S RELIABILITY & EXPERIENCE



DETAILED CONSTRUCTION DESIGN



DETAILED CONSTRUCTION DESIGN AND ON-SITE SUPPORT



êÜôù 152 12 10 13.30

0.45

12.40

0.45

åóù ôåñéêÜ 150 12 10 (2x75) 12.00

åî ù ôåñéêÜ 300 12 10 (9x2+282) 12.00

Üí ù 54 12 10 (27x2) 12.00

125 16 10 12.00

êÜôù 125 20 10 14.00

1.26

11.48

1.26

125 18 10 6.00

1.04

0.33

1.85

1.74

1.04

125 18 10 6.00

1.04

0.33

1.85

1.74

1.04

36 12 10 (9x2)x24.05-3.20

1.20

1.65

-0.8

0

1.20

68 12 10 (17x2)x23.44-2.60

1.20

1.04

-0.2

0

1.20

4 14 (2x2) 12.00

250 28 102.40

0.40

2. 00

125 14 10 2.40

1. 00

0.25

1. 15

125

1410

14. 0

07.

21

0.60

125

1410

9.50

7.46

2.04

12.00

250 28 102.40

0.40

2.00

125 14 102.40

1.00

0.25

1.15

12514

1014. 00

7. 21

0.60

12514

109.50

7. 46

2.04

4 14

10.6

5 -10

.25

7.56

-7.1

6

1.25

(2x2

)4

14óô

ç í ð

áñåé

Ü

10.6 5-10. 25

7.56-7.16

1.25

(2x2 )4

14óôçí ð

áñåéÜ

-1.83 -1.83

-2.81

-3.41

± 0.00

+0.40

+0.98

+7.80

125 14 10 4.67

Üí ù 125 18 10 12.80

åóù ôåñéêÜ 130 14 10 12.00

2821 12 30/40 0.760.15

0.460.15

124 12 30/40 (62x2)0.76-0.50

0.15

0.46-0.200.15

0.02 0.05 0.02

0.020.02

0.02

0.01

5

Üí ù 108 12 10 13.30

0.45

12.40

0.45

535 16 1.75

0.21

0.49

0.35

0.49

0.21

532 12 10 (266x2) 4.00

1.77

0.46

1.77

28 12 10 [(7x2)x2] 4.00-3.74

1.77 0.46

-0.2

01.77

DETAILED CONSTRUCTION DESIGN AND ON-SITE SUPPORT



ON-SITE SUPPORT



HUMAN RESOURSES OF ODOTECHNIKI LTD


PARTNER AND DIRECTOR OF ODOTECHNIKI LTD

KONSTANTINOS SEFEROGLOU, Geotechnical Engineer, M.Sc.

www.linkedin.com/pub/konstantinos-seferoglou/2b/286/a

Areas of expertise:•Extensive conceptual design experience on civil engineering, mainly infrastructure projects;•Extensive experience in team leadership and support of multidiscipline groups;•Geotechnical investigation, monitoring programming and evaluation;•Tunnelling, tunnel portal analysis & design, cut & cover design; •Slope stabilization, retaining structures, rock fall protection design;•Assessment of slide stabilization and design of remedial measures;•Embankment design, earthworks reconstruction and upgrade;•Bridge foundation and deep foundation design;•Construction follow up consulting & value engineering;•Client and authorities communication skills;•Total design management and coordination.

http://www.linkedin.com/pub/konstantinos-seferoglou/2b/286/a
















ASSOCIATES OF ODOTECHNIKI LTD

Areas of expertise:•Geotechnical analysis and design with emphasis on infrastructure projects, mainly focused on evaluation of geotechnical investigation data, tunnel design, foundation design, landslide rehabilitation, slope stability; •Non-linear numerical analyses (2D & 3D) for the simulation of complex geotechnical environment and construction procedures;•Development of geotechnical database for the storage and evaluation of geotechnical, design, construction and monitoring data;•Risk analysis in geotechnical projects (sensitivity analysis, probabilistic analysis, reliability based design);•Structural design of conventional structures.

PETROS FORTSAKIS, Geotechnical Engineer, Ph.D.

www.linkedin.com/pub/petros-fortsakis/24/a7a/368

http://www.linkedin.com/pub/petros-fortsakis/24/a7a/368


Areas of expertise:•Design of tunnels with focus on the specific engineering geological and geotechnical behaviour of rock and soil formations;•Tunnel face stability, tunnel face reinforcement and protection design, using rational methods, with focus on face nailing and steel tube umbrella in shallow tunnels;•Numerical analyses with the use of finite element codes;•Evaluation of geotechnical investigation data for rocks and soils;•Design of geotextile reinforced soil structures, for use in road and rail embankments, retaining structures, bridge foundations;•Landslide rehabilitation;•Stability of big scale slope cuts in large open mines;•Risk assessment associated with civil engineering works due to rock falls and landslides in highways and secondary roads.

GEORGIOS PROUNTZOPOULOS, Geotechnical Engineer, Ph.D.

www.linkedin.com/in/prountzopoulos


http://www.linkedin.com/in/prountzopoulos


FRAGISKOS CHRYSOHOIDIS, Engineering Geologist, M.Sc.

www.linkedin.com/pub/fragiskos-chrysohoidis/48/808/a59


Areas of expertise:•Geotechnical Investigation | Planning, Supervision & Evaluation;•Geological and Geotechnical Design (field and desk work);•Geotechnical Monitoring | Scheduling and Assessment.


Areas of expertise:•Structural analysis and design with emphasis on infrastructure design;•Resistance of the structural system, the elements and the cross-sections;•Investigation and solution proposal for earthquake-resistant design with real life experience in the local industry planning and execution;•Involvement in analysis and design of structures under extreme loading conditions, including both seismic and wind settings;•Inspection and assessment of nonlinear static and dynamic structural behaviour. Concentration on tension structures with the engagement of finite element method;•Preparation or supervision of construction drawings.

ISABELLA VASSILOPOULOU, Structural Engineer, Ph.D.

www.linkedin.com/pub/isabella-vassilopoulou/46/871/304



Areas of expertise:Structural analysis and design of structures (mainly infrastructure related civil engineering projects) including:•3D modelling and linear/non-linear numerical analyses;•Resistance of the structural system, the elements and the cross-sections;•Static analysis of structures under permanent, live, accidental, thermal and ground-settlement loads;•Dynamic analysis of structures under seismic combinations;•Foundation bearing capacity;•Preparation or supervision of construction drawings.

EVA XENOU, Structural Engineer, M.Sc.

www.linkedin.com/pub/eva-xenou/46/3bb/b00



Areas of expertise:•Structural analysis and design of structures;•3D modelling and linear/non-linear numerical analyses;•Extensive experience on structural analysis and design of metro stations, buildings and bridges;•Dynamic analysis of structures under seismic combinations;•Preparation or supervision of construction drawings.

LEFTERIS CHRISOS, Structural Engineer

www.linkedin.com/pub/lefteris-chrisos/53/26/353


CONTACT US FOR MORE INFORMATION



Tel. +30 210 8228052, +30 210 8222127, Fax. +30 210 8233003