2013Bridge

Jacques-Chaban-Delmas technicaldata sheet

Why build a vertical-lift bridge in the centre of the city ?

Bridge specifications

• Connecting the boulevards on either side of the river.• Providing an impetus for new urban development projects on the banks of the Garonne.• Ensuring that the river remains navigable right into the historic centre of Bordeaux, the Port de la Lune.• Integrating the architectural and technical project into the urban environment, landscape and heritage.• The dimension and design of the bridge allow it to handle different transport systems: Bus, Tram, Train.• The constraints and environmental imperatives revealed by impact studies.

433 m roadway length

117 m length of mobile, lifting section

5 travées including 1 lifting section

106 m width of navigable passage

53 m air draft beneath the lifted section

60 predicted number of lifts in a year

11 minutes time to raise roadway (and to lower)

2 x 2 car lanes

2 dedicated public transport lanes

2 lanes for pedestrians, cycles and users with restricted mobility

october 2009

Work begins

november 2009

Construction of the baseplates and cutwaters begins in the Bassens dry docks

december 2009

Laying of the foundation stone

june 2010 - march 2011

Baseplates and cutwaters installed

2011 - summer 2012

Fixed sections of the deck laid

october 2012

Lifting section installed

16 mars 2013

Bridge’s inauguration

18 march 2013

Opening

Schedule

Live

In pictures !Many movies and photographic reports have shown the lift-bridge called Jacques Chaban-Delmas all along its building process. Find all of them on www.pontchabandelmas.lacub.fr. And get to live the official opening highlights again. Or find out more about the main building stages, as decribed throughout this brochure, such as when the base and its upstream and downstream dolphins were put into position, back in june 2010. You might also have a look on an online movie about a 3D-navigation simulator, designed with the help of the Pilotes de la Gironde navigators’ association. And, last but not least, you may want to live through the up and down movement of the bridge’ span, as if you were there, thanks to a permanent webcam settled on the left bank of the river.

Thus doing, La Cub intends to keep memory of the bridge’s building and living process and to share it all with you on the Internet : enjoy !

Left bank - Bacalan

Longitudinal section and structural outlinescale 1:400

Right Bank - Brazza

Left bank Right bank

Left bank Right bank

Left bank Right bank

Left bank Right bank

Left bank Right bank

cutwater

pillar base

lifting section

fixed deck

Left bank Right bank

Pillar base Upstream cutwater

Downstream cutwater

Dry dock: Length:240m, Width 32m, Depth: 15m

Left bank Right bank

The site in 8 steps

Step 1 Step 2

Step 3 Step 4

Step 5

Step 7

Step 6

Step 8

Step 1The jettiesNovember 2009 and October 2010: construction of the jetties on the right bankOctober 2010: construction of the jetties on the left bank

Step 2Prefabrication of base sections and cutwatersNovember 2009: construction in the Bassens drydocks

Step 3Pillar foundations and cutwaters towed into place and anchoredJune 2010 right bank: structural elements towed into place then driven into the river bedMarch 2011 left bank: same process repeated

Step 4Foundations laid, tower cranes mounted; construction of the pillars which will hold the fixed deck with the help of cofferdamsMid 2010 to mid-2011

Cross section and foundation of the towers

Step 5Constructing and installing the fixed deckSummer 2010: preparation for the final assembly of the fixed deck was performed in Italy by Cimolaï Company (the main framework is composed of three steel beams), including the pedestrian sectionsJuly 2011: the parts which make up the fixed deck arrived via maritime freight, and were assembled on the right bankDecember 2011: left bank section of the fixed deck laid

Step 6Construction of the pillars and concrete reinforcement of the fixed deck2011: the four towers were cast on site using formwork moulds.

Step 7Installation of the lifting mechanism inside the towers; construction of the lifting section; dismantling of the access jetties2012

Step 8Installation of the lifting section23 october 2012

Navigation simulator

From March to June 2010, tests were conducted using a 3D simulator in order to analyse and optimise navigation around the bridge. This research was conducted for the benefit of all those who sail on the Garonne, allowing us to predict the navigation conditions created by the new bridge.

Each base consists of 20 foundation stakes of 1600 mm diameter poured directly into metal casing. The middle pillar on the right bank sits on 25 steel stakes. The left bank pillar is based on a shallow foundation which sits atop a bed of marl mudstone. The abutments on the right and left banks are founded on stakes housed in metal casing. The left bank abutment is founded on 30 foundation stakes, each 800 mm in diameter and cased in metal. The right bank abutment is founded on 13 foundation stakes, also 800 mm in diameter and cased in metal.

B B

C

C

Platform

Spiral staircase

Lift shaftDisabled access

Guard rail

Glass casing

1500

1200

1000

C

C

A A

Lift shaft

Pulley for the suspension cable whichlifts the central section

Disabled access

2200

4400

6280

1830

Spiral staircase

Glass casing

Height 82m

2200

50

50

150

R1500

1000

0.000Z:

-11.100Z:

-27.000Z:

Top of the base +5,8 m

Height -5,2 m

Mechanism housing

Right bank -BrazzaLeft bank - Bacalan

1690

0

Bedding thickness 0.60 m34.00 m x 114.00 m

3700

200

1500

2000

5800

4700

500

2500

2300

600

150

350

The mechanism and the base

17 / 06 / 10 Arrival of the first pillar base, right bank

Winch drum - NFM Factory, Creusot

The lifting section of the Chaban-Delmas bridge is an impressive structure: 2750 tons of metal fitting together flawlessly!Achieving this feat requires an elaborate elevator system, designed to use as little energy as possible. In each of the four pylons of the bridge, a cable system (connected one side to the span and the other side to a heavy counterweight) winds on enormous pulleys located in the upper reaches of the pylons. This mechanism is operated from the control station on the right bank, driven by two 132 KW motors and winch systems housed in the base of the bridge.The total weight of the counterweight is 2694 tons: 56 tons less than the weight of the mobile section!Thus, in the down position, the lifting section is held in place by this extra weight known as the ‘imbalance’, by simple effect of gravity.

motor + winch

pulleys

counterweights

cables

Lifting section

A giant elevator

Project leaders

Commissioning authority

Communauté urbaine de Bordeaux

direction des Grands travaux et des Investissements de déplacement

direction de la Voirie service des Ouvrages d’art

Design and construction consortiumVinci construction (GTM Sud Ouest TP GC)

Technical Design EGIS-Jean Muller International

Architecture and structures: Lavigne et Cheron Michel Virlogeux

Glass Coveris

Concrete supplier Garandeau

Concrete reinforcement Cepaba

Lift design Hardesty & Hanover

Construction and installation of steel framework Cimolaï, Sarens

Technical inspections Socotec

Topographical supervision Pedezert-Labeille

Diving (foundations) S. Romoeuf

Power supply Vinci Energie

Energy and information technology GTM Santerne

Automated systems Actemium

Telecom systems Axens

Underwater cables Cepeca

Health and safety GM Qualité

External checks SNCF - Département des Ouvrages d’Art

Lighting design Y. Kersalé

Lighting Citeos

Lifting system operator Eiffage Construction Métallique

Communauté urbaine de Bordeaux

05 56 99 84 84

Graphic Design Le Big, in partnership

with the Cub’s Communications Department

TextCub

technical data sheet for the Chaban-Delmas Bridge

Drum

Downstream column

Upstream column

Base P3

Right bank Bastide

Secondary reducer

Motors and primary reducer

Secondary reducer

Drum

River Garonne

Further informationwww.pontchabandelmas.lacub.fr

Cap Sciences’ observation kioskHangar 20 - Quai de Bacalan 33300 Bordeaux tél. +335 56 01 07 07 www.cap-sciences.net