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ID:33998048
大小:25.02 MB
页数:58页
时间:2019-03-03
《大跨双线客专铁路连续钢桁梁桥静动力性能和节点详细应力计算分析》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、万方数据西南交通大学硕士学位论文第
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3、页ABSTRACTInthisthesis,takinglong-spancontinuoussteeltrussgirderbridgeasbackground,thestaticanddynamiceffectsofthebridgewerestudied.Furthermore,cantileverconstructionclosureschemeandlocalanalysisofjointstructurewereresearchedaswell.Firstly,aFEMso
4、ftwareMIDAS/Civilwasusedtoestablishaspatialfiniteelementbeammodelofthebridge.Deformationandstressundersingleactionandcombinedactionsofdeadload,liveload,lateralwindloadandtemperaturechangeetc.ofthebridgestructureoreanalyzedandcalculated.Secondly,cantileveredconstru
5、cl:ionschemeforthebridgewasstudiedwithconsiderationofstructuraldeformationandstressforcrucialcases.andunstressedclosuremethodforthebridge.Thirdly,throughsimulatingtheinteractionbetweenpileandsoil,freevibrationcharacteristicswereanalyzedduringitsfinishedstage.Respo
6、nsespectrummethodandtimehistorymethodwererespectivelyappliedtocalculatedeformationandstressofmaincomponentswhenthebridgewasundertheactionofseismaswellasthecombinedactionsofdeadloadandseism.Finally,usingtheFEMsoftwareANSYS,shellelementwasappliedtosimulatejointstruc
7、turaldetailsandlocalanalysishasbeendone.Thestressofjointunderunfavorableloadshavebeenstudied.Keywords:steeltrussbridge;cantileverconstruction;closurescheme;seismicresponse;localanalysis万方数据西南交通大学硕士学位论文第1
8、I页目录第1章绪论⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯.11.1我国大跨度钢桁梁桥的发展⋯
9、⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯11.2工程背景⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯31.2.1工程概况和主要设计参数⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯..31.2.2主桥结构设计⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯一41.3本文主要工作⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯5第2章全桥施工阶段静力计算分析⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯62.1悬臂施工方案⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯62.1.1施工方案简述⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
10、⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯..62.1.2施工阶段划分⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯..72.2有限元模型的建立⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯92.2.1上部结构模拟⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯一92.2.2下部结构模拟⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯102.23边界条件模拟⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯112.2.4全桥空间有限元模型⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯122.3合龙前施工阶段计算分析⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
11、⋯⋯⋯⋯⋯⋯⋯⋯⋯..132.3.1施工阶段荷载⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯132.3.2合龙前各工况支反力计算分析⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯132.3.3合龙前各工况位移计算分析⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯142.3.4合龙前各工况应力计算分析⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
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