资源描述：
《砂土与全风化花岗岩中双线盾构隧道近距离下穿高架桥的影响分析》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。
1、上海交通大学硕士学位论文ABSTRACTcontrolofexcavation.(2)Theresearchandanalysisofshieldcrossingconstructionparameterschange,theviaductbeforeandafterresearchshowedthat:ShieldCrossingtheviaduct,maintainthecutterheadtorqueconstant,respectively,tothetopofthethrustandsoiltankpressureincreasedby3.6
2、%,6.7%,canputthecontrolinthe5mmwithinthelimitsofsettlementpier,ensurethesafetyofbridgestructure.(3)Theeffectoftheruleofdoublelineshieldconstructionenvironmentwasstudiedbytheanalysisofengineeringtestdata.Experimentalresultsshowthat:①Thegroundsubsidencehistoryassociatedwiththeshie
3、ldmachineheadposition,theshieldmachineheadthroughtherapidgrowthofsettlementpoint,growthrateislessthan0.85mm/days;eachmeasuringpointofthefinalsettlementandincisionthroughthemeasurementpointdrivingvelocity,settlementpointrelativelysmalltestdrivingfast,slowdrivingtestpointsettlemen
4、ttheamountisrelativelylarge,evenifthedrivingspeedto0(toolchangeduringsettlement),willcontinuetodevelop.②Thedeepsoilsettlementinshieldmachineheadthroughmeasuringpointsbeforeandafterthedevelopmentofabout15daysinsoilobviously,locatednearthesettlementoftunnelburieddepthof9~15mmaximu
5、m,withtheincreaseofdepth,thesettlementisgraduallyreduced.③Theearthpressurebymeasuringpointsbeforeandafter5~10daystofluctuateinshieldmachine,withmaximumdepthof9.5m~12.5mdepthsoilpressurechange.soilpressureatdifferentdepthsorupordown,or28.5%ofthelargest,thelargestdeclinein17.9%.(4
6、)ThisstudyanalyzestheimpactofthelossratioofthestratumofsoilIV万方数据上海交通大学硕士学位论文ABSTRACTdeformationandinternalforceofliningthroughnumericalsimulation,theinfluenceoffurtherresearchontheburieddepthofthetunnelandthegroutingonthepilefoundation,studyshows:①Influenceofstratumlossofsoilde
7、formationandinternalforceoftunnelisnonlinear;stratumlossrateisgreaterthan2%,therapiddevelopmentofsoildeformation;intheconstructionofdoubletracktunnel,shouldbereducedasmuchaspossibledoubledifferenceofstratumloss;atthesametimecontroleachofthetunnelgroundlossratioshouldnotbegreater
8、than1.4%.②Thepiletopsettlementdecreaseswiththei
