1、上海大學碩士學位論文超大直徑土壓平衡盾構施工過程的力學分析姓名：羅云峰申請學位級別：碩士專業(yè)：工程力學指導教師：馮偉20080801卜海大學碩上學位論文ABSTI認CTShieldtunnelingiSanimportantmethodintheundergroundtunnelconstructionbeneathurbanareasbuttheprojectswillimpacteffectsonsoilaroundtheshiel

2、dmoreorleSSSincethesuperlargediameterearthpressurebalanceshieldbeusedforthefirsttimeinourcountrythereiSnotmatureexperienceaboutitSOithasgreatappliedsignificancetostudytheGroundMovementandsurfacedeformationinsuper1argedia

3、meterearthpressurebalanceshieldtunnelingBasingonthefirstprojectwithsuperlargediameterearthpressurebalancedtunnel(ThenorthdistricttunnelofShanghaiBundChannel)thisthesissimulatestheconstructionprocessbyusingthemethodofnonl

4、inearfiniteelementanalysisThedifferentconditionswithspecificparametersarediscussedinpresentstudyAccordingtothefeaturesforconstructionofsuperlargediameterearthpressurebalancedtunnelathreedimensionFEAmodelhasbeenestablishe

5、dtoanalyzethegroundmovementandgroundsurfacesettlementbyearthcoveringthicknessandshielddiameterTheinfluencesofearthcoveringthicknessandshielddiameteronthemaximalgroundsurfacesettlementwhichshowsomepotentialtohelpthetunnel

6、design，arestudiedA3DFEMmodelconsideringshallowcoveringiSconstructedtostudytheinfluencesofthepressuresofsoilchamberandgroutingongroundsettlementTheresultsconcludedabovecanmakesomeadvicesforshieldtunnelingconstructionThist

7、hesisstudiestheinfluenceofanewconstructionwhichabovecrossesanoldnearbytunnelsontheexistingtunnels(Metroline2)，andthesettlementofbuildingnearbyiSinvestigatedaswell，suchasAstorHouseHotelThedeformationofexistingbuildingcaus

8、edbycrossingconstructioniSinvestigatedandvaluableconclusionsareobtainedThecomputationaldataandrelatedconclusionsinthisthesiscanbeareferenceforsuperlargediametertunneldesignandconstructioninthe?！縯l】reKeyWord：Superlargedia