考虑桩土相互作用的曲线梁桥地震效应分析

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1、山东建筑大学硕士学位论文态，可以发现一些异同点。Elcentro波作用下，考虑桩土相互作用后桥墩的破坏程度减轻。在天津波作用下，考虑桩土相互作用后桥墩的破坏程度加重。基础固结模型在天津波作用下桥墩的破坏程度要比Elcentro作用下的要严重一些。关键词：曲线梁桥动力特性，桩土相互作用，弹塑性分析，桥墩破坏过程responseofcurvebeambridgehascertainpracticalsignificancetopromotetheapplicationofcurvebeambridgeinbridgeengineering．Ittake

2、sacurvebeambridgeastheresearchobject，differentfiniteelementanalysisiScarriedoutanddoresearchonseismicofdifferentdesignparameters．nfirstanalyzesthechangeofdynamiccharacteristicsafterconsideringthesoil—pileinteraction．Becausethesti确essdecreases．thenaturalfrequencyofthestructurei

3、Sreduced．Thenitanalyzesthespectrumofthestructureincludingwhetherconsideringsoil—pileinteractionanddifferentradius．Itdrawsaconclusionthatitcanobtainmaximumstresswheninputtingtheseismicwaveattheendofthebridge．Soinordertocontrolthestressofthestructure，weshouldinputtheseismicwavea

4、longtheendofthebridgeinthedesign．Itdidelastoplastictime．historyanalysisofthecurvebeambridgeinthefourthchapter．Itincludesseismicunderdifferentreinforcementratioanddifferentseismicwave．Atthetimeofthesamepeakaccelerationunderdifferentseismicwaves，stressandstraindiagrammayvarycons

5、iderably．Itdescribesthattheresultoftheseismicisnotonlyrelevantwiththenumericaloftheseismicwavesbutalsowiththespectrumcharacteristics．Fromthecompafisonoftheultimatedevelopmentofplastichingestateinthepiersundertwokindsofdifferentseismicwaves，itcanbeseenthatthepierswithdifferents

6、tiffnesshasdifferentseismicunderdifferentspectralcharacteristicsearthquakewaves．Thedisplacementatthetopofthepierisincreasingwhilethestressisincreasingordecreasingafterconsideringsoil．pileinteractionunderthetwokindsofseismicwaves．SOitmayhaveadverselyaflbctonthestructureconsider

7、ingsoil．pileinteraction．Fromthecomparisonoftheultimatedevelopmentofplastichingestateinthepiersbetweenthefoundationconsolidationmodelandthesoil．pileinteractionmodel．itcanbeseenthatthedevelopmentregionofplastichingeinbothendsofthemedialabutmentpierinthesoil．pileinteractionmodeli

8、Sbiggerthanthatinthefoundationconsolidationmodelwhilethedevel