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ID:37371491
大小:4.20 MB
页数:83页
时间:2019-05-22
《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
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