innovation in civil engineering structures
TRANSCRIPT
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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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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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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 ?
Architectural bridges in urban network