饱和软土堆载预压处理的非线性有限元分析

《饱和软土堆载预压处理的非线性有限元分析》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。

1、分类号TU471密级单位代码学号10618106280618墨煮交通戈謦硕士学位论文论文题目：饱和软土堆载预压处理的非线性有限元分析导师姓名、职称申请学位门类：专业名称：论文答辩日期：学位授予单位：研究生姓名：邬宜兰周世良教授工学港口海岸及近海工程答辩委员会主席：黄超评阅人：王多垠2009年4月黄超兰一盏ABSTRACTAsalleconomicalandeffectivemethodintheconsolidationofsoil，surchargepreloadingisbeingmoreand

2、morewidelyusedincapitalconstruction，anditsscopeofapplicationalsorelatestomoreandmoresaturatedsoftsoilreinforcement．Bynow，thereiSalotofsuccessfulpracticalexperienceinconsolidationofsaturatedsoftsoilwithsurchargepreloadingmethod，butthetheorystudystillsig

3、nificantlylagstheengineeringpracticeatalltimes．Atpresent，thedesignsofsurchargepreloadingaremainlydependedontheexperienceandtest．Inthispaper,theconstitutivemodelofsoilwasdiscussed．Basedondifferentyieldcriterion,theelastoplasticconstitutivematrixandlarge

4、deformationconstitutiveequationofsoilwereobtainedfornumericalanalysis．Inordertofurtherpromotethedevelopmentoftheoryandappliedresearchonsurchargepreloading，basedoncomprehensiveanalysisofrelevantinformationandresearchdataofdomesticandforeignsaturatedsoft

5、soilfoundationreinforcementwithsurchargepreloadingmethod，takingintoaccountthesolid-fluidinteractionproperties，materialnonlinearityandgeometricnonlinearityinconsolidationofsaturatedsoftsoilwithsurchargepreloading，andusingelastic．plasticmodelbasedonBiotc

6、onsolidationtheory，dynamicequilibriumequationonfiniteelementwaseduced．ModelWassetupintheuseofAbaqustocalculatethesoil’Ssettlement，displacementandporewaterpressureofeverymomentinthesurchargepreloadingcourse．ThedatawasdisposedtophotobysoftwareofExceltoan

7、alyzethecomplexmicro．mechanicbehaviorandmacro—deformationcharacteristicsofsaturatedsoftsoilfoundationundermulti—levelloading．Throughcontrastbetweenthecalculatedvalueandmeasuredvalue，andthenexplorenumericalsimulationmethodofsurchargepreloadingandfieldte

8、stresultstostudytheapplicationofsaturatedsoftsoildealingwiththeplasticdrainageplatepreloadingmethodandthepossibilityofconstructionparameter．Suchas：determinesettingthedepthofplasticdrainageplateaccordingtoporewaterpressuredissipationinth