超大規(guī)模地下鐵路車站與隧道過渡段復合結構數(shù)值建模及施工方案優(yōu)化.pdf

1、北京交通大學碩士學位論文超大規(guī)模地下鐵路車站與隧道過渡段復合結構數(shù)值建模及施工方案優(yōu)化姓名：高德蓮申請學位級別：碩士專業(yè)：建筑與土木工程指導教師：賀少輝201206ABSTRACTABSTRACT：Thetransitionsections咖ctureformofBeijingZhangjiakouintercityrailwayBadalingundergroundstationandtunnelisverycomplicated—t

2、riarchcrosssectiontransitionforlargespanvariablecross—sectionsinglearchSuchalargescaleundergroundrailwaystationisextremelyrareintheworld，itisthefirstathomeandabroadthatinthefieldofdepth，span，height，depth—spanratioandSOon

3、BasedontheengineeringbackgroundofNewBeijingZhangjiakouIntercityrailwayBadalingundergroundstationandtunneltransitionsectionconstruction，theproblemoftriarchandlargespanvariablesinglearchconstructionschemesinthetransitionse

4、ctionlaunchedresearch，ThispaperdrawssomebasisandthelawasreferenceinconstructionprocessbythesimulatecalculationofABAQUSfiniteelementanalysissoftwareMajorworkandresultsasfollows：(1)Thisthesissummarizestheoverseasanddomesti

5、cresearchstatusoflarge—spantunnelconstructionmethods，sketchesthemechanicsconcept，constructionmethodsandsurroundingrockmechanicslawinthefieldofundergroundengineering(2)Thisthesisdiscussthefrequentlyusedmethods(middlecellm

6、ethod，onesidewaildriftheadingmethod，CRD4holesmethod，CRD一6holesmethod)thatisusedinlargescalevariablecrosssectiontunnelengineeringresearch，analysisthestress，deformationandplasticareasdistributionofsurroundingrockbythesimul

7、atecalculationofconstructionprocess(3)Bycomparativeanalysis，confirmthebestconstructionschemeoftransitionsection：middlecellmethodappliestotriarchcrosssectionandCRD4holesmethodappliestolargespansinglearchofvariableCROSSsec

8、tionItCanofferdirectguidancetotheBadalingundergroundstationandtunneltransitionsectionproject，andsomereferencetosimilarundergroundprojectsKEYWORDS：largesection；variablecross—section；railtunnel；optimizingconstructionscheme