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ID:33738162
大小:2.85 MB
页数:113页
时间:2019-02-28
《钢-混凝土组合梁非线性力学性能分析》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、西南交通大学硕士研究生学位论文第1I页AbstractThroughintegratingthesteelgirderandtheconcreteslabwithshearconnectorS,steel—concretecompositebeamhasbeenwidelyusedinthestructuralandbridgeengineering.Comparedwithtraditionalconcretestructuresorsteelstructures,thisnew-typecompositestructurehasitsparticularmechanicalperf
2、ormances.Withintensivediscussionaboutmaterialnonlinearbehaviorsofsteelandconcrete.andtheslipperformanceofshearconnectors,thestudiesaboutwhole—processnonlinearanalysisofsteel··concretecompositebeamarecarriedwithConcreteStructuresBi-NonLinearAnalysis(CSBNLA)softwareinthepresentthesis.Theinfluences
3、ofconcretecrackingandinterfacesliponstructuralbehaviorsofsteel—concretecompositebeamaremainlyconcemed.Then,thetime—variambehaviorsofsteel-concretecompositebeamareinvestigatedinthepresentthesis.Theeffectsofcreepandshrinkageofconcreteonstructuraldeformationandstressarestudied.Moreover,theinfluence
4、sofarrangementofshearconnectoronlong·-termbehaviorsofsteel·-concretecompositebeamarealsostudied.Furthermore,thenonlinearandthetime—variantbehaviorsofprestressedsteel·concretecompositebeamareanalyzed.Withwhole—processfiniteelementanalysis,thenonlinearresponsesofdeformation,stressofsteelgirderandc
5、oncreteslab.interfaceslip,andSOonarcstudied.Meanwhile,thelong—termeffectsofprestressedsteel-concretecompositebeamcausedbycreepandshrinkageofconcreteareinvestigated.Parameteranalysisconcemingwiththoseaboveworksisalsocarried.Finally,numericalsimulationaboutapracticalprestressedsteel—concretecompos
6、itebeambridgewithspan6x80miscarriedinthethesis.Theinfluencesofinterfacesliponthestructuralbehaviorsduringconstructionprocessandlong-termbehaviorscausedbycreepandshrinkagearestudied.Meanwhile,withnonlinearfiniteanalysisapproach,theultimateresistancecapacityofthisbridgeisdetermined.Keywords:steel·
7、concretecompositebeam;nonlinearmechanicalperformance;shrinkageandcreep;prestressing;degeneratedbeamelement西南交通大学硕士研究生学位论文第1II页目录第l章绪论⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯11.1概述⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯11.2钢一混凝土组合梁的分类⋯⋯⋯⋯
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