欢迎来到天天文库
浏览记录
ID:36514059
大小:1.18 MB
页数:49页
时间:2019-05-11
《液化场地地下RC结构物抗震性能数值仿真研究》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、镕‰——单位代码:—地堑!{{』MⅢⅢ含肥工学火警HefeiUniversityofTechnology硕士学位论文MASTERDISSERTATIoN③论文题目:液化场地地下Rc结构物抗震性能数值仿真研究学位类别:——学历硕士学科专业:(工程领域)堂圭三堡作者姓名导师姓名完成时间黄展华汪明武教授2007年4月NumericalsimulationexperimentsofseismicperformancesofundergroundRCstructuresinliquefiablesoilsAbstractNowadays,theundergroundreinfor
2、cedconcretestructuresarewidelyusedinhydraulicengineeringandwaterelectricityengineering,communicationtransportationsuchasroadandrailway,andimportantprojectsinmetropoliscities.Theresultsfromtheinvestigationsinthehistoricalearthquakecasesshowthatearthquake-inducedliquefactionwillcausedestru
3、ctionsoftheundergroundreinforcedcoacrete(RC)structures,andleadtothehugelossofeconomyandthepersonnelcasualty.SothestudyonseismicstabilityandseismicsafetyoftheundergroundRCstructuresinliquefiablesoilsisextremeimportanceforsafeguardingthepeople’Slivesandproperties.Basedontheeffectivestressa
4、nalysismethod,thispapercarriedonthenumericalsimulationexperiments,whichareindifferentdepthandboundaryconditions,oftheundergroundRCstructureinliquefiablesoils,inordertoinvestigateintothemechanismofinteractionbetweentheliquefiablesoilandtheRCstructure.andtheprinciplesofdestructionofRCstruc
5、tureunderdifierentearthquakemotions.Theprinciplesofdistributionofacceleration,displacement,eXCeSSporewaterpressurearediscussed.TheresultsCanprovidescientificbasisandthereferencesfortheseismicdesignandtreatmentsofRCstructuresintheliquefiablesoilsunderstrongmotions.Theresultsfromthenumeric
6、alsimulationexperimentsindicatedthatthesoillayerinshallowdepthiseasytoliquefyunderearthquakemotion,Thevaluesofeffectivestressacting0nthesidewallsofRCstructureatthebeginningofearthquakeshakingaresmallerthanthoseaftertheshaking.TheplasticareaofRCstructureoccurredfirstlyonthecoiners.Thevalu
7、esofthelateraldisplacementandthehorizontalaccelerationincreasedalongwiththedepth.ThesidewalldistortionandthefloatingdisplacementdecreasedalongwiththeincreaseoftheburieddepthofRCstructure.Onthecontrary,theearthpressureincreased,andthevaluesoflowersidearebiggerthanthoseofup
此文档下载收益归作者所有