地鐵PBA工法地層位移及土與結構相互作用分析.pdf

1、北京工業(yè)大學碩士學位論文地鐵PBA工法地層位移及土與結構相互作用分析姓名：管誠申請學位級別：碩士專業(yè)：橋梁與隧道工程指導教師：陶連金20090501北京工業(yè)人學碩十學位論文AbstractWiththeprocessofurbanizationintheworld，citiesaroundtheworldshowedsharptrafficgrowth，whichresultedinaseriesofproblems，suchastra

2、fficcongestion，frequentaccidentsandenvironmentalpollutionAlloftheseconstrainedurbandevelopment，andaffectedpeople’snormallifeRailtransporthadbecomeoneoftheimportantmeansofrelievingurbantrafficcongestionWiththedevelopmento

3、fsubwayconstruction，whosescalewasgrowing，thesurroundingenvironmentalandotherconstraintfactorswerealsoincreasinglySOsharplythattheusableundergroundspaceWasshrinkingthestructureformsofmetrostationsandlinkingtunnelshadbeenv

4、ariedalot，andtheconstructiontechnologieshadcorrespondinglygainedmuchprogressandbeeninnovatedManynewconstructionmethodshadbeensuccessfullyimplementedanddevelopedsharplyThePBAmethodforshallowburiedundergroundexcavatedWaSon

5、eofthemCombiningtheadvantagesofthetraditionalshallowburiedundergroundmethodandpartialexcavationwiththecharacteristicofreverseconstructionmethod，thePBAmethodexhibitshigherflexibilityandwideradaptabilityThePBAmethodobtaine

6、dthesuccessapplicationfirstlyinBeijingsubwayTiananmenweststation，andthenobtainedlargescalepromotioninBeijingMetroLineFu—BaWangfujingstation，Line4XuanwumenstationandHuangzhuangstation，Line10SuzhoujiestationandJinsongstati

7、on，whichprovedthatusingthePBAmethodinloosesoftsoilforexcavatingshallowburiedlargesectiontunnelswaspracticableThereforeithadbroadprospectforapplication，anditWritsworthmuchpromotionButonlytheoreticalanalysisaboutthemethodW

8、asnotadequate，anditsmechanismandconstraintsofapplicationwerenotyetfullyunderstood，whichmayhinderfurtheruseandpromotionintheundergroundengineeringConsideringtheabovereason，firstlythispaperbasedonthesoilstructuremodelinthe

9、designtheoryofundergroundstructure，andFDM(FiniteDifferenceMethod)，withtheaidofFLAC3Dnumericalsimulationsoftware，ananalysisframeofconstructionprocesswillbeestablished，whichisbasedonthecharacteristicsofthePBAmethodByanalys

10、isoftheresults，thechangelawsofsoildeformation，andofgroundstress，andofplasticitystateofwallrockwillbesuggestedSecondly，basedonload—structuremodel，thisPaperhasanalyzedthestructureinternalforcechangerulesandthestructuredisp