填方路基结构地震响应研究

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1、重庆交通大学硕士学位论文填方路基结构地震响应研究姓名：杨雄申请学位级别：硕士专业：道路与铁道工程指导教师：刘涌江20090301ABSTRACTSubgrades，嬲theimportantcomponentsofroadsandcharacterizedbyamountsandcoverage，arebadlydestroyedbytheearthquake．InordertoreduceordecreaSethedamageoftheroadbedscausedbytheearthquake，i

2、tisspeciallyurgenttocarryouttheresearchofanti—earthquakesubgrades．Advancedandreasonableanalysisandevaluationmethodsofsubgradestabilityarethepremisetoearlyouttheresearch．Toproposetheanalysisandevaluationmethodsofsubgradestability,wemustclearlyknowthecha

3、racteristicsoftheshockload’Sinfluenceupontheroadbeds．Athesametime，thefillsubgradeistheeasieststyleoftheroadbedstobedamagedbytheearthquake．Hence，itisveryessentialtocarryouttheresearchoftheresponsecharacteristicsandlawoffillsubgradestructurestotheshocklo

4、ads．Thispaperbrieflydescribesthedevelopmentofsomeimportantproblemsabouttheresearchoftheresponseofthesubgradestructurestotheshockloadsbothhomeandabroad，setupafillsubgradestructureoftwo—dimensionalplanemodelbymeansofthelarge-scalefinite．．elementanalysiss

5、oftware··Adina,belongingtothetransientdynamicsanalysismethods，andanalyzetheearthquakeresponseoffillingthesubgradestructuresunderdifferentconditions．Comparativeanalysishavebeenmadeininputtingtheone．wayseismicwavesofthestructuresofroadbeds，seismicloadsof

6、differentintensity,differentroadbed．sectionshapes，differentroadbedfillingcohesion，differentroadbedthicknessandtheseismicresponseofroadbedstructuresonthebasisoftwotypesofdampingmeasuresroadbedstructure．Thepapershowsthebasiclawsoftheseismicresponseofthef

7、illsubgradestructuresunderdifferentconditionsandcomparativeresultoftwotypesofshock-absorptionstepsofthesubgrades．．Itisofgreatsignificancefortheresearchesofthefillsubgrade7earthquakeresponsetointegratedesignmethodsofsubgradeearthquake—resistance，improve

8、theabilityofubgradeearthquake—resistance，preventtheeconomiclossescausedbythedamagesofearthquakeandguaranteethehighways7freeflowandoperation．Keywords：Fillsubgradestructures；earthquake；dynamicresponse；finiteelement重庆交通大学学位论文原创性声明本人郑重声明：所呈