岩溶区桥梁钻孔灌注桩的施工

:0451-0712(2003)12-0023-03:U445.551:B,,(430030):,,,:;;;1111,,T(291925+3430)mT+(75+5120+75)m+(7030+22+2230+291925)mT,4617185m,26m,215m,80m;115m,3560m112,,,,,,2211(1),2026m,(2)2,,(3),40,K22+300K23+800m(4)10m,16175m,3,(5),,,,,,,,,,212(1),,(2),,,,,,,,,(3),,,,,,3,,,,3:,311,,:2003-05-2020031212HIGHWAYDec12003No112©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.,,,,(113göm3),,,18312,,,,,1175m,,12m,80cm,,,,,,,12m,,,13313,,,,(1)212m,,46m,(2)2m,,114göcm3(3)100t1175m,,12m(4),,,C25,017MPa,10min(5),,,,(6),,30cm,,,,911441141111(1),,,,(2),,,10m,(10mm,400mm)(3),,(4),,41112(1),112göcm3,,,,,011%014%(2)42200312©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.,,;,(3),80cm,,2m2m,,,,(4),,,,,,,,(5),,,,,,41113(1),,,,,1115h,34h(2),,1822cm,8h,(014%)(3),,,,,,,,,41214,2001428,2002714,100%,É5,,,,,,,:[1]JTJ041-2000,[S].[2]GB50205-95,[S].[3]JTJ025-86,[S].ConstructionTechniquesofBoredCast-in-PlacePilesofBridgesinKarstAreaFANGXiao-rui,SHENDian-dong,XUChang(HighwayConstructionSupervisingandConsultingCenterofHubeiProvince,Wuhan430030,China)Abstract:Accordingtotheconstructionofboredcast2in2placepilesinkarstclusterarea,whichbelongtothefourthbridgeoverHanjiangRiverinXiangfanCity,thistheconstructionaccidentsandtheircontributingfactorsareanalyzed1Moreover,correspondingimprovedtechniquesandmainpointsofqualitycontrol,areputforwardinordertoguaranteetheconstructionqualityandengineeringschedule1Keywords:bridge;karstarea;pilefoundation;constructiontechnique52200312:©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.