钢混凝土结合梁桥施工阶段受力性能研究

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1、北京交通大学硕士学位论文钢-混凝土结合梁桥施工阶段受力性能研究姓名：刘少华申请学位级别：硕士专业：桥梁与隧道工程指导教师：卢文良20080601ABSTRACTABSTRACT：Steel—concretecompositebeamisadoptedmoreandmoreintheurbanroadofOurcountry．Comparingtootherstructureshape，thisformexertstensionstrengthofsteelandcompressionstrengthofconcretemuchmore．Andithas

2、manyadvantages，suchas：legerity,slinky,bigspanability,celerityconstruct，goodtrafficwhenconstructingandSOon．However,negativebendingmomentnearbythemiddlesupportsofcompositesteel—concretecontinuousbeambridge,willcausefloordeckconcretetocrack，affectthedurationofstructureanddebasethel

3、ife-spanofthestructure．Theresearchprovestheameliorateoftechnicalmeasure，wecanbringtobearpre-stressinconcretedfloordecktoavoidcracks．Tllisthesisaimatthedesignandconstructingofaerodromeroadcompositesteel-concretecontinuousbeambridge，itanalysestheconstructingbyusingFEMsoftwareANSYS

4、．Weplacestraingaugeinadvancetoinspectstressofthisbridgeinconstructingphase．Thispapercleansupthetestingdateandcomparestheresultswithcalculationresults．Thenfindouttheeffectingfactorsbetweentestingresultsandcalculationresults．Inadditionto，thispaperanalysesthestressofcompositesteel—

5、concretecontinuousbeambridgewithdifferentparameterstogaintheeffectruleofdifferentparameters，andproposessometreatmentsandsuggestionsforthedesignandthestructureaspect．ThisPaperputforwardadjustingsequenceofconstructingconcrete,themethodofsupportsdisplacement，tautenthepre—stresstigh

6、twireisaeffectivemeasureforconcretebridgedeckpre—stressbyaimingatthedesignandconstructingofaerodromeroadcompositesteel—concretecontinuousbeambridge．Andeducedmoreeffectivewillgainbyintegratedadoptmoretechnicalmeasures．Inadditionto，thispaperanalysesthestressofcompositesteel·concre

7、tecontinuousbeambridgewithdifferentparameterstogaintheeffectruleofdifferentparameters，andproposessometreatmentsandsuggestionsforthedesignandthestructureaspect．KEYWoRDS：Compositebeam；Supporteddisplacement；Negativebendingmoment；Concretefloordeck；Stress；StrainCLASSNO：学位论文版权使用授权书本学位

8、论文作者完全了解北京交通大学有关保留、使用学位论文的规定。特授权北京交通大学可以将学位论文的全