隧道圍巖與支護結構的相互作用研究.pdf

1、南京理工大學碩士學位論文隧道圍巖與支護結構的相互作用研究姓名：劉琴琴申請學位級別：碩士專業(yè)：結構工程指導教師：范進20100601Abstract碩上論文AbstractAsatoughprobleminthetunnelingstability，theinteractionofthesurroundingrockandthesupportingstructureconsidersthemechanicalpropertiesonthe

2、interfaceasthecoreissueReasonablesimulationoftheinterfacehasgreatinfluencesbothonthestressdistributionoftheinterfaceandalsoontheforceanddisplacementofthesurroundingrockandthesupportingstructureAtpresent，asaproblemofthein

3、teractionofthesurroundingrockandthesupportingstructure，oneaspectreferringtheinterfaceoftheinitialandthesecondarysupporthasbeenwellstudied，whileanotheraspectisignoredforalongtimewhichreferstheinterfaceoftheshotcreteandthe

4、surroundingrockduringthenewAustrianmethodItisgenerallyconsideredthattheshotcreteandthesurroundingrockcouldworkasastableintegrityBasedonthebackgroundofapracticalproject，thispaperstudiesfurtherontheproblemreferringtotheint

5、eractionofthetunnelsurroundingrockandtheinitialsupportandobtainssomeachievementsasfollowing：(1)Deeplystudiedthemechanicalpropertiesofthesurroundingrockandsupportingstructure，establishedtheelasticplasticfiniteelementmodel

6、oftheinterface，andfiguredOutthelimitofthetangentialsheafingreferringtothecalculationmethodofthefrictionalresistanceoftherockembeddedpile(2)Theinfluencesoftheconstraintdegreeontheinterfacebetweenthesurroundingrockandthein

7、itialsupportwereresearchedTwodifferent3Dfiniteelementmodels，oneisconstrainingstrictly，anotheristakinginterfacefrictionintoaccount，wereestablishedusingABAQUSsoftwaretosimulatetheconstructionprocessandobtainedthedeformatio

8、nandresistanceofthesurroundingrockandliningItWasfoundthatthefrictionontheinterfacewoulddecreasetheresistanceofthesupportingstructure，increasethestressanddisplacementofthesurroundingrock，andeventhestressofthesurroundingro

9、ckandsupportingstructureup(3)，nlefiniteelementanalysisalsoresearchesontheinfluenceofthedesignparametersonthestressanddisplacementofthesurroundingrockandthesupportingstructurecontainingthelengthandthedistanceoftheboltandt