有限元TI-SPSI動力分析中的若干計算技術(shù)研究.pdf

1、⑧蟲藍l圃盜盤生墁堂籃監(jiān)塞∞浯乒等博士學位論文有限元TI—SPSI動力分析中的若干計算技術(shù)研究f上海市重點學科研究項目：復雜體系高層混凝土結(jié)構(gòu)抗震研究)博士生指號L薯良師專業(yè)研究方向方志馮紫良教授硝—奇亮副教授搐構(gòu)I程地下結(jié)構(gòu)J葡濟大學土木工程學院地下建筑與工程系二零零五牟V、1月上爿同濟大學申請博士學位論文有限元T1一SPSI動力分析中的若干計算技術(shù)研究AbstractInrecentyears，moreattentionshaveb

2、eenpaidtotheresearchofdynamicsdilpile。structureinteraction(SPSI)BecauseofthecomplexityofSPSIproblemandthestricmessofresearchconditions，thereexistmanyunknownsthatshouldbestudiedindetailinthefutureInthisdissertation，basedo

3、nthetransverselyisotropicfromodelofsoilandtheapplicationofdynamicartificialboundarieswithfiniteelementmethod(FEM)，thedynamicresponseofaSPSIsystemwithviscoelasticdynamicartificialboundaryisstudiedBasedonthetheoryoftransve

4、rselyisotropicandelasticplasticmodelofsoil，aFEMprogramMIXDYN_TIisdeveloped，whichisverifiedbycomparisonbetweenanalyticalandnumericalTIresultsThentheparameteranalysisofTImaterialunderstaticanddynamicconditioniscarriedoutAc

5、cordingtoaboveresearchandthemeasurementsofvarioustypesofrealsoilitisnecessarytoconsidertheanisotropyofthesoilinnumericalsimulationforengineeringpracticeFormeetingtherequirementofthenumericalsimulationofaSPSIsystem，theava

6、ilabilityofseveralartificialboundariessuchasviscousboundary，elasticboundary，viscoelasticboundaryanddoublyasymptoticmulti—directionalboundaryindynamicanalysisiscomparedwithFEMThemainfactorsofnumericalstabilityandthedynami

7、cresponseofone—dimensionalcolumnundertransientimpactandsineloadingonaboveboundariesareanalyzed，Amongtheseboundaries，viscoelasticartificialboundaryisthemoststableandefficientandsuitableforthesoilofShanghairegionThemechani

8、calresearchonthesubjectofcontactproblembetweentwodifferentmediaisratherdifficultInthisdissertation，anovelnon—linearthin—membraneelementisproposedtosimulatetheslippagebetweensoilandpileIntheelementaresidualstiffnesscoeffi

9、cientkisadoptedtosimulatetheweaknessofphysicalmechanicalpropertyofthethin。layersoilbetweenpileandsoilTheadvisedvalueofthecoefficientkispresentedthroughastudyonthesoilanchor—engineeringtestBasedonaboveresearch。aSPSIstatic