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1、北京交通大學碩士學位論文地鐵列車引起的自由場地振動規(guī)律及對周圍建筑物的影響研究姓名：文強申請學位級別：碩士專業(yè)：橋梁與隧道工程指導教師：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鰣ation．KEYWORDS：metro；trainvibration；environmentalresponse；numericalanalysis；freefield；structure．CLASS
7、NO：TU91V學位論文版權使用授權書本學位論文作者完全了解北京交通大學有關保留、使用學位論文的規(guī)定。特授權北京交通大學可以將學位論文的全部或部分內容編入有關數(shù)據(jù)庫進行檢索，并采用影印、縮印或掃描等復制手段保存、匯編以供查閱和借閱。同意學校向國家有關部門或機構送交論文的復印件和磁盤。(保密的學位論文在解密后適用本授權說明)學位論文作者簽名：吏綴導師簽名：簽字日期：沙書年6月／oEl簽字日期：炒g年石月I。日熬劍性童盟獨創(chuàng)性聲明本人聲明所呈交的學位論文是本人在導師指導下進行的研究工
