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1、预应力高强砼管桩的静压法施工桩基种类很多，有沉管灌注桩、冲（钻）孔灌注桩、人工挖孔桩、锤击桩等。但随着城市文明建设的需要和文明施工的进一步规范化，冲钻孔灌注桩、沉管灌注桩、锤击桩因其污染和噪音正被逐步淘汰，人工挖孔桩亦存在危险性大、对土质要求高、工期较长等局限性，于是一种新的桩型——静压管桩以其噪音低、污染少、工期短、安全系数大等诸多优点而被逐步推广使用。预应力高强砼管桩是生产厂家以先进生产工艺在现代化的流水生产线上采用离心成型的先张法预应力砼管，并经过高压蒸养而成的。管桩质量稳定、强度高，砼强度等级不低于C80。外径规格从300mm—
2、1000mm，长度规格从6m——15m，还可根据需要订做长度小于6m的短桩，根据其抗弯性能的不同还分为A型、AB型、B型、C型。静压桩施工原理是利用桩机自重和配重通过液压系统直接快速将桩压入土中，因为桩的快速挤压，使得桩周土的间隙水瞬间饱和超压，土壤的粘聚力和摩阻力大幅降低、甚至失去，类似如流砂状态，桩就较易压下去。随着桩静置时间的延长，桩周土间隙水慢慢排出，土壤恢复其粘聚力和摩阻力，桩的承载力显著提高，桩的保险系数和安全储备较大。本人负责的骏景园桩基工程就选用静压管桩。一、工程概况：****是由***房地产公司开发，********厦
3、门分院设计，******aspecialtooltomeasurehalfapointtherotorshaftrunoutandsimultaneousmeasurementoftwocouplingfluttertesting,itshouldmeettherequirements.Installthecouplinghousingstoensureembeddedrotorcouplingwithinaconcaveshoulder,androtorclearancemeetsthedesignrequirements.6.4,6
4、,wearingconstructiontechnologyofgeneratorrotorsdemonstration6.4.6.1constructionpreparationandconditionsthroughthestatorbeforeloadingcheckandconfirmtoconfirmairtightnesstestofthestatorandstatormechanical,electrical,instrumentationandcontrolandotherrelatedworkhadbeencomple
5、ted.Internalcleaningofstator,highpowervacuumthesurfaceofthestator.StatorandrotormagneticCenterdrainageiscomplete.Inconjunctionwiththequality,mechanical,electricalandotherrelevantpersonstofinallycleaningcheckthestator,whichiscleanandfreeofanydebris.Wornrotorscheckandconfi
6、rmconfirmbeforeloadingtherotorairtightnesstest,electricaltestworkhasbeencompleted.Inconjunctionwiththequality,mechanical,electricalandotherrelevantpersonstofinallycleantherotorschecked,itsinterioriscleanandfreeofanydebris.Byquality,mechanical,electricalandotherprofession
7、alstoconductanexaminationoftherotor,confirmthewearconditionoftherotor.Specialequipmentinspectionandrotorthroughthepreparationtoolbeforeloadinginventory,checktoconfirmthatitappearsintact,completetool,toolsrequiredforuseofwireropethathasafactorycertificateandtestreport;wir
8、eropeshouldselectthesafetyfactor≥6;hoisttestingqualified;roadhavebeenequipmentauthorizedVisatemporarysu
