資源描述：
《雙孔盾構隧道近接施工離心模型試驗研究》由會員上傳分享，免費在線閱讀，更多相關內容在學術論文-天天文庫。
1、西南交通大學碩士學位論文雙孔盾構隧道近接施工離心模型試驗研究姓名：余峰申請學位級別：碩士專業(yè)：橋梁與隧道工程指導教師：藺安林;仇文革20080601西南交通大學碩士研究生學位論文第ll頁-_-l●_lI_●_l--●l-_--_-IIl_-●_I●I_lI●_-_I-l_-__●_I_I-_-__●l-●____l●l-lll_l-_-_lI_-●_l-●_●-ll-_●_●--___ll-I_l●_I-ABSTRACTTherapiddevelopmentofeconomyinChinaspeedsuptheprocess
2、ofurbanization,continuouslyexpandsthesizeofcities，populationdensi夠inthecentreareaofbigcitiesandmegalopolis．Crowdedspace，trafficcongestion,slowpaceoftrafficformsaso—called”CitySyndrome”．Foralongtime，theexpansionofurbantransportation,infrastructureandcapacityofmajorc
3、itiesisbased01"1theexpansionofurbanlanduse,butgrowthinpopulationandlivingdemands，theshortageofurbanlanduse，hasbecomethefocusofcontradictions．Toachievethesustainabledevelopmentstrategy,inadditiontodevelopinhi曲-altitudearea,eyesarefocusedonthedevelopmentandutilizatio
4、nofundergroundspace,resultinginalargenumberofundergroundengineeringandapproachingconstructionoftunnels，whichwillinevitablycausecomplexrelationshipamongtheadjacenttunnels，puttingforwardstoanegativeimpactontunnelconstruction．Undergroundtunnelexcavationaremoresensitiv
5、eandvulnerabletodisturbance,whilethedesignandconstructionarealsoofnonormsorstandards，mechanicaltheoryofalltypesofapproachingexcavationconstructionsystemhasnotelaborated．AsaresulLthereinforcementandsafetymeasurearealwaysexcessivelystrict,basedonwhichtheconstructioni
6、sofmuchmoredifficulties．Onewayistoraisemanufacturingcostandislikelytowastemoney．Theotherwayistotakearisktoadaptblindcountermeasureandresultsinsafetyproblem．Asthescaleofcitycomtruetionincreasesandshieldmethodisusedcomprehensively,thestudyoninfluenceruleandcountermea
7、sureofapproachingexcavationofshieldtunnelareurgentaffairs．Herebystudyonapproachingexcavationofshieldisofurgentneeds．Thisdissertationproceedfourgroupsofcentrifugationmodeltestondifferentpositionofdoubleshieldtunnels，bymeasuringgroundsettlements，wallreekpressureandli
8、ninginternalforceofshieldtunnelindifferentconstructioncourse．Regularitiesofdistributionofgroundsettlements，wallrockpressureandlininginternalforce
