多跨连续刚构桥构造分析及合龙技术研究

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1、Y1526050分类号!!塑：!!密级单位代码10611学号106270!堡名彦交迫戈謦硕士学位论文论文题目：多跨连续刚构桥构造分析及合龙技术研究StudvonStructuralAnalysisandClosureTechnicoftheMulti．spanRigid-ftameBridge导师姓名、职称：涂凌副教授周水兴教授、博士申请学位门类：圭!一专业名称：结构工程论文答辩日期：!!!!!!!旦!!旦学位授予单位：重壅奎塑查兰答辩委员会主席：陈山林教授评阅人：喻国华高级工程师张敏副教授2009年04月ABSTRACTWiththeadvanceofthetheory

2、ofbridgedesignandcontinuousimprovementoftheconstructiontechnology，theContinuousrigidframebridgeplaysallimportantrole(Steadyrise)inthebridgefamilyaccordingtoitsgoodstructuralstability，cross．ability，expressedconstructionprogress，economiccost，comfortabletravelingandSO011．Thisbridgetypehasstr

3、onglycompetitivewhenspanbetweenonehundredandthreehundredmeters．However,therearestillsomequestionsonthetheoryofitsdesignandconstructionprocess．BasingontheHeJiaBaBridgewhichsituatesinhighwayofChongqingtoChangshabelongingtotheparagraphofYouYangtoDaHan，thispaperanalysestructuralparametersandc

4、losureTechnicoftheMulti—spanRigid-frameBridge．Themainjobtodoisasthefollowing：1)BasingontheHejiabaBridge，sevralcalculationmodelsaresetuptoanalysetheinfluencetothebearingofcontinuousrigidframebridgewithdifferenthightofbeamandVariablelineofbeambottom2)Thestructureofcross．sectionofpierinConti

5、nuousrigidframebridgeisdiscussed，analysethestructureofcross．sectionofdoublethin-walledpieranditsbearing，discussthefactorsthataffectedthestabilityofdouble—bucklingthin—walledhighpier．Theresultsindicatethatthewindloadandclosurejackingforcearethemaininfluencesforthestabilityofdouble—buckling

6、thin-walledhighpier．3)Discussedthekeyfactorstobeconsideredwhenthemulti-spancontinuousrigidframebridgecloseup，putforwardthemethodofcalculatingthepushingvolumeandintroducedthemethodofcalculatingthejackingforce．4)ContrarytoTheHeJiaBaBridge(Sixcross—linked)，throughtheSelectionofthecloseupprog

7、rams，Proposedanddemonstratedthecloseuporders：Fistsidespan，secondmediumspanandlastothermediumspan．Beforeclosuring，themethodhasthemeritofsmalljackingforceandobviouseffect．KEYWORDS：Multi-SpanContinuousRigid—FrameBridge；Structureparametersanalysis；StabilityofDouble-·Thi