NR2C FINAL SEMINAR 15TH NOV 2007

Innovation in Civil Engineering Structures

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CONTENTCONTENT

1. State of the Art

2. Materials for the Future

3. Structures for the Future

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1.1. State of the artState of the art

0

500

1000

1500

2000

2500

3000

3500

1750 1800 1850 1900 1950 2000

Span

in m

eter

s

Suspension Cable-Stayed Metal Beam Orthotrope Beam

Next : 5000 ?

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Distribution of Distribution of Bridges and ViaductsBridges and Viaducts

% in % in numbernumber

90 %Viaducts : spans 0 m to 50m

5 %5 %Viaducts : spans 50 m to 100 mViaducts : spans 50 m to 100 m

3 to 5 %3 to 5 %Viaducts : spans comprised between Viaducts : spans comprised between 100 m to 150 m 100 m to 150 m

1 to 3 %1 to 3 %Viaducts : spans more than 150 mViaducts : spans more than 150 m

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Today Today exceptional viaductsexceptional viaducts

made with made with classical materialsclassical materials

Normandy viaduct (France)Normandy viaduct (France)

856 m main spanWorld record in 1995FIB award 1998

856 m main spanWorld record in 1995FIB award 1998

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OresundOresund Viaduct (Den. Viaduct (Den. -- Sue.)Sue.)

Main span : 490 m road and rail16 Km link1999

Main span : 490 m road and rail16 Km link1999

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Bras de la Bras de la PlainePlaine Viaduct (France)Viaduct (France)

Composite trussWorld recordmain span:280 mFIB award 2002

Composite trussWorld recordmain span:280 mFIB award 2002

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MillauMillau Viaduct (France)Viaduct (France)

Highest multi span in the world6 stayed spans :342 mPylone : 328 m2004

Highest multi span in the world6 stayed spans :342 mPylone : 328 m2004

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RionRion AntirionAntirion Viaduct Viaduct (Greece)(Greece)

Multi span3 x 560 mHigh seismic zone(2 m)2004

Multi span3 x 560 mHigh seismic zone(2 m)2004

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Ting Kao Viaduct

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IRR viaduct

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AkashiAkashi Viaduct (Japan)Viaduct (Japan)

Main span : 1991 m1998

Main span : 1991 m1998

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2 2 –– MaterialsMaterials for for thethe FutureFuture

• Classical material with optimizedperformances (H. Perf Steel -green concrete)

• Ultra High Performance Fiber-reinforcedconcrete (UHPFRC)

• Composite material : Fiber reinforcedpolymers (FRP)

• Natural material (wood)

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TypicalTypical composite composite productsproducts

Fiberline Planke

DuraSpan Deck

Asset Deck

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SomeSome new structures new structures

usingusing new new materialsmaterials

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AberfeldyAberfeldy footbridge footbridge (Scotland)(Scotland)

Main Span 64 mDeck and Pyloneglass epoxy40 cables aramid1994

Main Span 64 mDeck and Pyloneglass epoxy40 cables aramid1994

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SeonyuSeonyu pedestrianpedestrian bridge bridge ((SthSth CoreaCorea))

UHPRC (ductal)180 – 230 MPaArch : 120 mWidth : 4,30 mThickness : 1,30 m2002

UHPRC (ductal)180 – 230 MPaArch : 120 mWidth : 4,30 mThickness : 1,30 m2002

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LaroinLaroin pedestrianpedestrian bridge (France)bridge (France)

Main Span 110 mWidth : 2,50 mThickness : 10 cmCarbone Fiber Stays

Main Span 110 mWidth : 2,50 mThickness : 10 cmCarbone Fiber Stays

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3 . Structures for 3 . Structures for thethe FutureFutureExpected bridge performances

• Bridge of the future could be the ideal bridge, with all qualitiesand no drawbacks

• Hard to imagine one which fulfills all tomorrow’s expectations => there are various ideal bridges

- Safe-Redundant - Functional or multi-functional- Durable- Evolutive – smart - Reliable- Aesthetic –- Easy and fast to implement - Cost effective- Green structures – HQE

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WhatWhat are are the next the next structures ?structures ?

• Industrialised and prefabricated bridges, adaptable to the typical crossings of infrastructure networks.

• Very large crossings to span the last greateconomical connections :

Colonnia – Messina – Gibraltar – Channel – Behring.

• Architectural bridges in urban network.

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WhatWhat are are the nextthe next structures ?structures ?Industrialized and prefabricated bridgesFast constructed

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WhatWhat are are the nextthe next structures ?structures ?Very large crossings

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WhatWhat are are the nextthe next structures ?structures ?

Architectural bridges in urban network

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Le Havre – Vatine Bridge

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Thank you Thank you for for your your attention .attention .