國(guó)外淺沉井基礎(chǔ)課件

1、When a Dream becomes RealityThe Rion-Antirion BridgeJacques Combault (France)Second Severn Crossing(UK)5 kmConfederation Bridge(Canada)13 kmRion-Antirion Bridge(Greece)5 cable-stayed spansVasco de Gama Bridge(Portugal)16.5 kmOresund Bridge(Denmark Sweden)13 kmMillau Viaduct(France)8 cable-stayed spa

2、nsSutong Bridge(China)1088 m long main spanHangzhou Bridge(China)36 km215 yearsofMajor AchievementsGulf of Corinth2252 m7383 ft392 m1285 ft239 m783 ft65 mRIONANTIRIONDEEP WATER65 m.RIONANTIRIONSAND AND GRAVELCLAYSILTWEAK ALLUVIUMSPLANELEVATIONPIER BASEVERTICAL SLIP : 2 mHORIZONTAL OPENING : 2 mTECTO

3、NIC MOVEMENTS180 000 tRIONANTIRIONSHIP IMPACT16 knotsNO UNUSUAL PROBLEM65 m WATER DEPTHWEAK ALLUVIUMSSEISMIC INTENSITYSHIP IMPACTTECTONIC ACTIVITYDEEP WATERHUGE INTERACTION FORCESSEISMIC and TECTONIC ACTIVITY+WEAK ALLUVIUMSWHAT ABOUT FOUNDATION ?HUGE INTERACTION FORCES+The Akashi Kaikio Bridge - Kob

4、e (Japan)MAIN BRIDGEInitial ConceptPoor quality soilShallow pad foundationSoil improvement+Supporting SoilPylon Deck ConnectionDisplacement capacitySeismic hazardEnergy dissipation+Pylon HeadTransverse PTConcrete pylon headWeight+MAIN BRIDGEFinal ConceptPylon Made Monolithic Base re-designed and Sim

5、plified Head made Composite and Light65 m90 m230 mPylonsConceptSeabed Deposits Removed Reinforced with Steel Pipes Gravel Soil Pylon InterfaceDeck Made Continuous Fully Suspended Made SlenderDeckandCablesThe Rion - Antirion BridgeComposite steel-concrete deckSteel I girders 2.20 m highConcrete top s

6、lab 25 cm thick5 continuous spansRion side span 286 m long3 typical spans 560 m long Antirion side span 286 m longFully suspended2*23 pairs of cable-staysUniformly distributedRegular spacing 12.15mSimply supported at both endsComposite steel-concrete deckSteel I girders 2.20 m highConcrete top slab

7、25 cm thick5 continuous spansRion side span 286 m long3 typical spans 560 m long Antirion side span 286 m longFully suspended2*23 pairs of cable-staysUniformly distributedRegular spacing 12.15 mSimply supported at both endsCONTINUOUS DECKStay-Cablesspacing: 12.174 m strands: 43 - 55 - 61 - 73Top Fla

8、ngewidth: 0.80 - 1.00 m thickness: 40 - 80 mm22.10 mBottom Flangewidth: 1.00 - 1.35 - 1.70 m thickness: 80 - 90 mm2.20 m15 mm25 mmComposite steel-concrete deckSteel I girders 2.20 m highConcrete top slab 25 cm thick5 continuous spansRion side span 286 m long3 typical spans 560 m long Antirion side s

9、pan 286 m longFully suspended2*23 pairs of cable-staysUniformly distributedRegular spacing 12.15mSimply supported at both endsComposite steel-concrete deckSteel I girders 2.20 m highConcrete top slab 25 cm thick5 continuous spansRion side span 286 m long3 typical spans 560 m long Antirion side span

10、286 m longFully suspended2*23 pairs of cable-staysUniformly distributedRegular spacing 12.15mSimply supported at both endsCONTINUOUS DECK2865602252560560286Final Characteristics of the BridgeComposite steel-concrete deckSteel I girders 2.20 m highConcrete top slab 25 cm thick5 continuous spansRion s

11、ide span 286 m long3 typical spans 560 m long Antirion side span 286 m longFully suspended2*23 pairs of cable-staysUniformly distributedRegular spacing 12.15mSimply supported at both endsComposite steel-concrete deckSteel I girders 2.20 m highConcrete top slab 25 cm thick5 continuous spansRion side

12、span 286 m long3 typical spans 560 m long Antirion side span 286 m longFully suspended2*23 pairs of cable-staysUniformly distributedRegular spacing 12.15mSimply supported at both endsCONTINUOUS DECKDAMPERSFUSEComposite steel-concrete deckSteel I girders 2.20 m highConcrete top slab 25 cm thick5 cont

13、inuous spansRion side span 286 m long3 typical spans 560 m long Antirion side span 286 m longFully suspended2*23 pairs of cable-staysUniformly distributedRegular spacing 12.15mSimply supported at both endsComposite steel-concrete deckSteel I girders 2.20 m highConcrete top slab 25 cm thick5 continuo

14、us spansRion side span 286 m long3 typical spans 560 m long Antirion side span 286 m longFully suspended2*23 pairs of cable-staysUniformly distributedRegular spacing 12.15mSimply supported at both endsCONTINUOUS DECKRION-ANTIRION Bridge (Greece)28656022525605602862701480890320TATARA Bridge (Japan)12

15、74484751271177TING KAU Bridge (Hong Kong)Structural StabilityNatural Seimic IsolationStructural FlexibilityFor linear variations (shrinkage, creep, temperature)For tectonic displacementsFor gravity loads (traffic)Structural LightnessBetter seismic behaviourBetter aerodynamic behaviourADVANTAGESMAIN

16、BRIDGEFinal DesignReinforced SoilCapacityTHEORETICAL ANALYSESGlobal Soil Bearing Capacity THEORETICAL ANALYSESKinematic Approach of the Yield Design Theory 01000020000300000200400600800Horizontal Shear Force (MN)Overturning Moment (MN-m)9m x 9m7m x 7mTHEORETICAL ANALYSESInclusion Spacing Effect WHM

17、Centrifuge Test in a Laboratory EXPERIMENTAL VALIDATIONCentrifuge Test : Reinforced Soil ModelEXPERIMENTAL VALIDATIONCentrifuge Test : Before Installation of the Foundation ModelEXPERIMENTAL VALIDATION Centrifuge Test : Ultimate Capacity TestEXPERIMENTAL VALIDATIONMonotonic Failure Load EXPERIMENTAL VALIDATIONCyclic Load (75% Fail