地鐵列車振動引起的地基液化問題.pdf

1、北京交通大學(xué)碩士學(xué)位論文地鐵列車振動引起的地基液化問題姓名：劉明麗申請學(xué)位級別：碩士專業(yè)：巖土工程指導(dǎo)教師：陳文化20050301墊塞奎望查蘭堡主堂堡堡苧壘!!!唑SubsoilLiquefactionInducedbyVibrmionsofMetroTrainsAbstractAsusual，thedepthofthesubway’StunnelisshallowWhenthesaturationsandlayerorthesilts

2、oillayerexistinthebasementthevibrationofthetrainmaycauseliquefactionForexample，inthetrialphaseoftheNolandN02routesofGuangzhoumetro，theNolrouteofTianJinmetro，theNolrouteofNaniingmetro，thephenomenonofsoilliquefactionandwat

3、erextrusionhavebeenoccurredbylocomotivesvibrationItisworthresearchingthesoilliquefactionundervibrationsofmetrotrainsInthisdissertation，theSUbjectofsandliquefactionofsubwaybasementunder10comotivesvibrationjSstudiedBasedon

4、twophasemediatheoryusingthesoilmechanicsmodel，thesoildynamicresponsebylocomotivesvibrationofsubwaybasementiSanalyzedThesatural；edsandstratumiSregardedastwophasemediaandothersareregardedassingle—phasemediaTherelationshipb

5、etween也estressandthestainofthesoilskeletoniShyperbolaandthewateriScompressibleThequalityofthesand，suchaSthedilatancyrigiddegradationandhysteresis，andtherelativemotionofwaterandsoilareconsideredThefiniteelementspatialdisc

6、retizationofthecoupledfieldequationswithGaleikin’SmethodiSdescribed，thentwodiscreteformaregainedForone，thedisplacementsoffluidanddisplacementsofsoilframeareunknownquantityFortheother，theunknownquantityarethedisplacements

7、ofsoilframe，thedisplacementsoffluidandthepressureofporefluidTheproblemofthevibrationofthesubway’Stunnelisconsideredintheplanestrainspace11leloadingofthesubwaytrainisSOshortthatthewaterofthesoilCan’tbeventedTheporepressur