区间隧道穿越桥梁桩基的施工方案

:1003-4722(2003)02-0035-03,(,430050):,(70+7105+70+40)mV,,:;;V;;:U448.23;U443.159:ADesignConsiderationsforMainSpansofQiandaoLakeBridgeCHENMing,YANGZheng2wu(ChinaZhongtieMajorBridgeReconnaissanceandDesignInstitute,Wuhan430050,China)Abstract:InthelightofthenaturalconditionsatQiandaoLakeBridgesiteandtheenvironmentalre2quirementsofthefamoussceneryspot,themainspansoftheBridgearedesignedasaprestressedconcretecontinuousrigid2framebridgeonV2shapepiers,whichischaracteristicofmultiplespansandlongcontinuousunitarrangedin(70+7105+70+40)m.Thelargediameterconcrete2filledsteelpipepilestobebuiltin2torocksareselectedforusefortheBridgefoundations.Thispaperfocusesonthebridgetype,designconsider2ationsfortheoverallstructure,selectionofpilefoundationstructuresandconstructionschemes,andalsobriefsthedesignandconstructionofthemaingirderandpiers.Keywords:rigid2framebridge;prestressedconcretestructure;V2shapepier;bridgedesign;concrete2filledsteelpipepile:2002-12-25:(1969-),,,1993,1,,4A1258.1m,20,100,3.5kN/m2,18.0m,4,5,:(1),1200m,300m(,)(2),45m(3),0.79.0m,,,,2040MPa(4)3050,,253,©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.,,,,21,915m,,(70+7105+70+40)mV,12,300m,560m1V:(1),,(2),V,,,,,(3)2V,,,,(4),,,V,V,,,,,,3,55m,40m,,,915m10V,,,,,,,,,,:(1)4/5(40m),,,,,(2)4,,,,,,,(3),,,,,2.2m(2.5m,16mm)1.8m24mm,1,,,7%,59%,50%,,,41.8m,C35,127824mm,3622mm,1.86320032©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.m211.8m2.2m/tm-11.050.98/m3m-12.414.78/kgm-1183450/kN8000069000EI/kNm22.571077.81107158/kNm4900121502V,45,,13.816.5m,7.5m2.0m,1.031.21m,5.328m,7.8m,4.0m4(3),V4.2m,29m,2.7m,V18.0m,4.15m,0.25m(),0.5m,0.5m0.25m19,1.0m,V1,,09101,19j15.2412j15.249j15.2423j15.24,0.5mV,25mm32V2219j15.24412j15.24169j15.24212j15.242612j15.2470m212j15.242012j15.2440m612j15.242012j15.245,,:,4555m;;,3,,,,46VV2,,;V,(49)73,©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.C,(3)W12(4)6%12%(5)200mg/L3.3(1),,120s(2),,40MPa,,4(3)40cm(4),(5),,,(6),,,,(37)41278,,,,7,(70+7105+70+40)mV,,,V,,20029,2005994©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.