連拱隧道圍巖力學(xué)特性分析和空間效應(yīng)研究.pdf

1、北京交通大學(xué)碩士學(xué)位論文連拱隧道圍巖力學(xué)特性分析和空間效應(yīng)研究姓名：王彪申請(qǐng)學(xué)位級(jí)別：碩士專(zhuān)業(yè)：土木工程指導(dǎo)教師：劉保國(guó)20061201北京交通大學(xué)碩士學(xué)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(zhuǎn)’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