大型沉井结构施工难点及处理方法

:2009205223:(1980-),,,93Vol.9No.320099JOURNALOFANHUITECHNICALCOLLEGEOFWATERRESOURCESANDHYDROELECTRICPOWERSep.2009(,233000):,:;;;:TV543.8:A:167126221(2009)0320033203Themainproblemsandovercomingapproachesduringconstructingprocessoflarge2scalewell2sinkingstructureCHENGang(AnhuiWaterResourcesDevelopmentCo.,Ltd.,Bengbu233000,China)Abstract:Thepapersummariesmainproblemsduringconstructingprocessofcoastalsoftfoundationcaissonstructure,andprovidesapproachestoovercometheseproblems.Keywords:softfoundation;caisson;structure;constructiontechnology,,,,,,,,,,11.1(1):815m,,415m,,(2)(3),,,,(4)315m,,,,(5),,,(6),,(7),,22.1(1),(2):,310m215m,80cm+20cmC20,(3),2.2,,,,,824h,1215m:,,,1215m,,82:,,4,2.3,,,,,,,,2.4,,,80cm,40cm,30cm,2830n5:Rn-0.7SnR,Rn-1.60Sn0.83R(R20),Rn-1.60Sn0180R(R20)Snn,,2.5:,,,,Hc/100mm,Hc/100mm,1:,,,,,439,:,012014MPa(),,,,;2(40cm50cm),,;,,,,;,,2.6:,,,,,,2.7:,,,,,,3,,,,,,,,[][1]SL176-2007,[S].[2]DGJ08-90-2000,[S].[3]GB50300-2001,[S].[4]SDJ207-80,[S].()533: