摘要
Adynamicmodeltest(CL=4)atdifferentvelocitiesoftrain,namelydifferentloadingfrequencies,iscarriedouttostudythedynamiccharacteristicsofahigh-speedrailwaytunnelinvertanditsfoundationsoils.Notonlyaretheaccelerations,dynamiccoefficients,dynamicstressesoftheinvertandfoundationsoilsemphaticallyanalyzed,theirrelationshipwiththevelocityofthetrainarediscussedindetail.Throughlaboratorytesting,theattenuationofvibrationpropagatingfromuptherailsisobtainedandthecalculationformulaofthespeedinfluencecoefficientofthetunnelinvertispreliminarilyestablished.Thedepthofthefoundationsoilsinfluencedbyvibrationisalsodeterminedinthisstudy.Itisshownthattheresponsesofthetunnelinvertandfoundationsoilstovibrationareslightlyincreasedwiththevelocityofthetrain;circumferentialstressesinthebottomoftheinvertaretensilestressesandmaximumstressesappearunderthefootoftherails;thedynamicsoilpressuresofthefoundationdecreasequicklywiththedistanceawayfromthetunnelinvertandanexponentialrelationshipexistsbetweenthem.
出版日期
2015年03月13日（中国期刊网平台首次上网日期，不代表论文的发表时间）
