静压预制桩的施工方法

183303Vol.30No.3ArchitectureTechnology2,,,,213002,:1998-10-23,,,,,,11,15,55m,,,11m1~4m(fk=220kPa),10m;,1AZH140(240)A,400mm400mm(C30),549,,,11~15m,15m22.1压桩机性能及配置W10011,J22,S31YZY360:120kW/h,360t,0~40MPa,23m,1.5m,1.5m/min2.2试桩要求及P-S曲线,!(JGJ94-94)5,,345220kN,92.41kN83,170.86kN,99.34kN:343h(15m),451h,550.5h(4518.5m)3P-S,1760.27kN1678.55kN1770.96kN2,700kN,750kN2.3工作原理与施工顺序,,,,,4,,(2)23杨学礼,,,,YZY,,TU473.13CONSTRUCTIONMETHODOFSTATICPRESSUREPRECASTPILEYANGXueliAbstractThestaticpressureprecastpiletechnologyhasbeenadoptedinpilefoundationworkoftheYinyuanMansion,aChangzhoucityproject.Thisconstructiontechnologyhasthemeritofnoiselessnessandnon-pollution.Duringconstruction,theYZYstaticpressurepile-sinkingmachineetc.havebeenselectivelyadoptedaccordingtotheirrespectivegeologicalconditions.Testpilepracticehasshownpile'sbearingcapacity,determinedproperprocedureofpile-sinkingandprovidedmethodofpileextension.Keywordssoftsoilfoundationbed,precastpile,hydraulicpile-sinking1184302.4入桩线路的选定,,,,,(),,,,,()2.5压桩操作注意事项(1)(2)1m/min,(3),YZY3601.5m,1.5m,,,(4)(),40cm,,,,,5~10mm,15~20min(),(5),33.1两节桩接头的水平平整度问题12m,,4(a),;(b),;(c),3.2断桩判别,,,3.3地下障碍物,(),,2m,;,3.4桩尖未达设计标高又无法继续压入时的判断和处理,1~3m,2800kN,,,,,,,(),44.1静压入桩适用的地质条件,;,,4.2适用的工程条件,,4.3静压入桩的优缺点:(1),,;(2),,,,250m(YZY360);(3),,:(1),,,,,;(2),,;(3),,,,,34