地铁列车作用下近距离交叠隧道的动力响应

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1、YlOSZ265中图分类号：UDC：学校代码：10004密级：公开北京交通大学硕士学位论文地铁列车作用下近距离交叠隧道的动力响应Thedynamicresponseofclosecrisscrossandoverlappingtunnelsundersubwayload作者姓名：李春峰导师姓名：白冰学位类别：工学学号：04121219职称：教授学位级别：硕士学科专业：岩土工程研究方向：地下工程北京交通大学2006年12月Withthecontinualdevelopmentofthescalcofsubway,theclosequarter'stunnels

2、insubwaywillappearinevitably．Basedonthemaintheoryoftheinteractionbetweentunnelstructureandrock，thispaperusesANSYStoestablishfiniteelementmodelstostudythedynamicresponsestonainload．Accordingtothecharacteristicsoftrainvibrationload，thisthesissimplifiesthetrain-tracksystemvibration．Th

3、esimulationoftrain—tracksystemvibrationbycomputermodelprovidestheexcitationloads．ElastoplasticmaterialDPisusedtosimulatethesoilandlinearelasticmodelastunnelstructure·撇paperalsousosANSYStocalculatedynamicresponsesofleft-rightparallelclosequarterstunnelsunderthedynamicloadofsingletra

4、inandbothtrains．thenreinforcedtunnelsalealsocalculatedlateLSomeusefulconclusionsontheinfluenceofdynamicloadtosurroundingtunnelsareobtaineA，towhatdegreereinforcedtunnelsrespondtodynamicloadisobtainedthroughcomparasion．Thedynamicresponsesundertheconsiderationofdifferentworkconditions

5、alediscussedinthethesiswhichincludesaccelerationresponse，displacementresponse,moment，shear,axialforce．Thesedataarediscussedandsummarizedsothattheresponsecufvcsofdisplacementandaccelerationareobtained：thedirectionaldistributionsofinternalforcearealsoObmined．Theseconclusionsareoflead

6、ingsignificancetobothdesignandconstruction．Thethree-dimensionalelasticdynamicFEMcalculationmainlystudiestheleft—rightparallel—upanddownclosequarterstunnelssection；aFEMmodelisconstructedtostudythedynamicresponseoftunnelundertwoloadsituations：singlefile-dynamicload，meet-dynamicload．S

7、omeusefulconclusionshavebeenobtained．KEYWORDS：vibrationload，interactionbetweentunnelstructureandrock。modelsanalysis,dynamicresponseCIASSNo：学位论文版权使用授权书本学位论文作者完全了解北京交通大学有关保留、使用学位论文的规定。特授权北京交通大学可以将学位论文的全部或部分内容编入有关数据库进行检索，并采用影印、缩印或扫描等复制手段保存、汇编以供查阅和借阅。同意学校向国家有关部门或机构送交论文的复印件和磁盘。(保密的学位论文在

8、解密后适用本授权说明)导师签名；稚签字日期：础，2月