連拱隧道圍巖力學特性分析和空間效應研究.pdf

1、北京交通大學碩士學位論文連拱隧道圍巖力學特性分析和空間效應研究姓名：王彪申請學位級別：碩士專業(yè)：土木工程指導教師：劉保國20061201北京交通大學碩士學位論文ABSIRACI巴Aimattheengineeringtopicofthettmeldigsplanesspa∞efleetthathasimportantuscvaluethis1cxtoverviewtllcprescntconditionandthed鉀doomcnttr

2、endoftlacdomesticandinternationalSlJaCccflearcsearelamethodTakekeytcelmicalrosearchontlacarelatunnelc01]slruetionasbaei【groundandwj山rcsavigtotheproblemsofspacec釃andsuppo刪occasioninprocessofdttalarelahm刪=Ieonstrt]etionThr

3、oughdeepembeddedandshallowmbeddeddualardatunneltwokindsofcircumstances。II、Ⅲ，IVtlarcekindsoftlaesurroundingrockconditionaddllpto6kindsofworkconditiontocarryOlin3DimemiollnumericalimitationamlysisapplytoProgramoffinitedij髓

4、刪l∞methodFIA∞D’studiedthedualarelatannelssIl酷selaaractcristiesupportingoccasionandtile$pacl：cffextoncomplicatedconslzuctionproceduresck1“1壕tlaesisdiseusscdthesttrtouladilagt攬ks矧lzess石c妓disp|aemcntfiel43ugporttingsh呦mande

5、enterualwallstressfieldsdislnlmtionconditionofthedualarchtlarotlghcarrying3DimensionnumericalimitationanalysisonthedualarchtunnelconstretiorlThen血ethesisstudiestlaechanginglawofthestlrcssleasingratedisplacmentleasingrate

6、thesh斟路oftlacsupportingstructureandthecentralwallimdcrthedifferentsurroundingrockconditionanddifferentembeddeddepthoftlareeheadingconstructionmethodThethesisstudiestlacdistributionlawofthcplasticalregioninthethreeheading

7、eonstrttctionprocessalsoTheresultsshowthatstressofdualarchtunnelrelatesriotonlywithconstructiontcelmology，rigidityandstrengthofsupportslraclulcbutalsowithsupportingoccasionandspacceffectetcTheresultsalsoshowthatthestress

8、ofdualarchtunneliscontrolledbysupportingoccasionandspaceeffectintheconditionofcomplicatedconstructionproceduresnIeresearchhaseertaillinstructionmeaningtothedesignandcoJ口structionofthedual—archtulmelengineeringilafutureKE