地铁列车引起的自由场地振动规律及对周围建筑物的影响研究

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1、北京交通大学硕士学位论文地铁列车引起的自由场地振动规律及对周围建筑物的影响研究姓名：文强申请学位级别：硕士专业：桥梁与隧道工程指导教师：夏禾20080601ABSTRACTIn1863，thefirstsubwayintheworldwasbuiltinEngland．Duringthepast150years，astherapiddevelopmentofeconomy,subwaytransitsystemhasbeenwidelyappliedinmanycountriesowingtoitslargecapacity,highefficiencyandlowpolluti

2、on．Atthesametime,therearosetheundergroundtrain-inducedproblemofvibrationdisturbancetothenearbyenvironment．Thishasbecomeapubliclyconcernedproblem，andhasbeenstudiedbyexperts．Theaimofthisdissertationistoassessandpredicttheeffectofvibrationsinducedbyasubwayttmnelandstudythecharacteristicsoffree—f

3、ieldandbuildingsvibrationsduetoundergroundtrainsandtheirtransmissionlaws．Thestudyconsistsofthesimulationsofthetrain．tracksystemvibration，whichprovidetheexcitationloadsofmovingtrainsontothetunnelstructure，andthecalculationofthetracktunnel—groundsystemvibration，bywhichthetransmittingpropertieso

4、fgroundaccelerationandvelocitiesarestudied．Inthemodel，therailissimulatedasallEuler-BemoullibeamrestingonWinklerfoundationintheverticalplane，theloadexcitedbysinglewheelontothetunnelisexpressedwiththeinfluenceofwheel．railcontactinteraction,andthedynamicloadofthewholemetrotrainontothetunnelisobt

5、ainedbysuperposition．Withthesource．transmitter-receiVermathematicalmodelasthe仃ain—soil-structure(TSS)interactionmodel，takingintoaccountsub—modelparameterssuchasthespeedofthetrain，trainaxleload，typicalgeotechnicalconditionsoftheground，depthofthetunnelundergroundandthesensitivityofthenearbybuil

6、dings，theanalysisiscarriedoutOVertheentiresystemusingthedynamicfiniteelement(FE)methodinthetimedomain．Variationsoffree—fieldandbuildingvibrationwithvariousinfluencingfactorsisshowedinthisdiss鲥ation．KEYWORDS：metro；trainvibration；environmentalresponse；numericalanalysis；freefield；structure．CLASS

7、NO：TU91V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。(保密的学位论文在解密后适用本授权说明)学位论文作者签名：吏缀导师签名：签字日期：沙书年6月／oEl签字日期：炒g年石月I。日熬剑性童盟独创性声明本人声明所呈交的学位论文是本人在导师指导下进行的研究工