地鐵區(qū)間隧道及接頭結(jié)構(gòu)抗震動力分析.pdf

1、同濟大學博士學位論文地鐵區(qū)間隧道及接頭結(jié)構(gòu)抗震動力分析姓名：童峰申請學位級別：博士專業(yè)：結(jié)構(gòu)工程指導教師：楊林德2000.5.1●AbstractAccordingtothefeatureoftheearthquakeoccurringffequenc％Shanghaiwillalsoexperienceanactiveperiodofearthquakeinthecoming30yearsHoweverduetothelackofba

2、sicinformationtheseismicdesigncodeforsubway(currentlybeingdeveloped)inourcountryisn’tyetcomprehensiveWiththedevelopmentofundergroundspaceincitiesandthelargescaleconstructionofundergroundstructures，theresearchonseismicinf

3、luenceonundergroundstructuresisbecomingmoreandmoreimportantandpressingInthepaperinvestigationhasfirstlybeenmadetotheseismicdamagetothesubwayinthehistoryhomeandabroadInordertoprovidereferencetoanti—seismicresearchanddesig

4、nofsubwayanalysisandsummaryareespeciallymadetotheseismicdamagetothesubwayinHyogoken—nambueaghquakein1995The1995一eaRhquakehadcausedseveredamagetosubwaystationmoreoverhorizontalcrackscanalsobeenfoundonshieldtunnelBeingline

5、arundergroundstructure，theshieldtunnelhasnotenoughcapacityinitscrosssectionwhenearthquakeoccurredDynamicFEMhasbeenusedtosetuptheseismicanalysismodeltocalculatetheseismicinternalforceinthecrosssectionofshieldtunnelBasedon

6、thesummedupinternalforce，testhasalsobeenmadetotheanti—seismiccapacityinthe舒￡igtingsubwayshieldtunnelAccordingtotheanalysisresult，suggestionhasalsobeenmadetoantiseismicconstructionSOthatfundamentsiSlaidtothefutureantiseis

7、micanalysisanddesigntoshieldtunnelBasedontherelativelydifferentlocationofliquescentlayerandshieldtunnel，theinternalforceofthecrosssectioninshieldtunnelisanalyzedindifferentsituationbytheuseofdynamicFEMTheresultoftheanaly

8、sisreflectsseveralpotions：whentheliquescentlayerisabovetheshieldtunnel，thelayerliquefactionwillnotinfluencetheantiseismiccapacityofshieldtunnel；whentheliquescentlayerishorizontallyintersectedwithshieldtunnel，layerliquefa

9、ctionwillCauselargescaleincreaseoftheinternalforceinshieldtunnel，butonlyintherarelyoccurringearthquake(belowprobability2％)，thetotalmaximummomentCanonlyexceedthedesignedcapacity；whenliquescentlayerisbelowshieldtunnel，thel

10、iquefactioneffectOnshieldtunnelismanifestedasbuoyancytothetunnelwhichcanatthes啪ecausesettlementoflayersInthetwolattercircumstances，thestrengtheningmethodisanalyzedintwespectiveways：strengthenthelayerbytheaidofcementpouri