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ID:36423508
大小:7.61 MB
页数:84页
时间:2019-05-10
《大跨径PC连续刚构桥宽箱空间效应研究》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、Y1530259分类号坐塑:!!密级单位代码10618学号106260120墨麽交通戈肇硕士学位论文论文题目:大跨径PC连续刚构桥宽箱空间效应研究StudyOilWide--boxSpatialEffectofLong--spanPCContinuousRigid-frameBridge研究生姓名:郝付军导师姓名、职称:钟明全教授级高级工程师申请学位门类专业名称:论文答辩日期工学桥梁与隧道工程2009年4月17日学位授予单位:重庆交通大学答辩委员会主席:周志祥评阅人:刘孝辉2009年4月施尚伟ABSTRACTBecausecontinuo
2、usrigid—framebridgehadmanyadvantages,suchasstressingdefinitely,constructioncostinglessthanotherbridge,applicationrangewide,constructiontechnicalmaturityandmaintenanceworkless,thisbridgestylehadbeenwidelyusedinchinaforrecentthirtyyears.However,nomatterathomeorabroad,invest
3、igationsfoundthatsomelong—spancontinuousrigid-framebridgesappearedcracksaIldexcessivedeflectionontheboxgirdersduringtheusingtime.Obviously,thereasonstoexplainthesediseaseswerecomplicated,lackspatialanalysisofthebridgeWasoneoftheimportantreasons.thispapercarriedoutthefollo
4、wingresearchesdependingontheShuitubridgeinChongqing:①ThespanofShui.tuBridgeWaslarge(mainspan245m),thecross—sectionoftheboxgiederwaswide(16.75m),inordertoavoidpossiblediseasesthatappearduringconstructionorusagetime,setupspatialfiniteelementmodelofthebridge,analysizedthespa
5、tialeffectcharacteristicsofthebridgeinconstructionandnormalusagestage.②Accordancewiththewideboxcross—sectionquestionoflong-spancontinuousrigid.framebridge,usedaplanefiniteelementsoftwaretoredesignShui-tubridgebychangingthewidthoftheboxcross-section.Setupaspatialfiniteelem
6、entmodelwhichboxgirderwidthWas20.50mbasedontheShui-tubridge.Bycontrasttheshearlageljf宅ctandbottomslabhorizontalnormalstressofthetwomodel,summarizedthewideboxgirderspacialeffectscharacteristicsoflong—spancontinuousrigid-framebridge,gavethelimitsstandardofthewideboxgirder.③
7、Accordancewiththediseasesonbottomslaboflong—spanandwide‘boxcontinuousrigid.framebridge,summarizedthedestroyingtypeonthebottomwhichinducedbyradialforceandanalyzedthereasonsthatledtotheboaomdestroyed.Derivedformulaforcalculatingtheradialforce.Analyzedtheeffectsoftheprestres
8、sreinforcementpositionerror,localbendingandstraightinsteadofcurveetc.ontheradialforce.Thenthreet
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