大跨度钢管混凝土拱桥施工方法的研究

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1、重庆交通学院硕士学位论文大跨度钢管混凝土拱桥施工方法的研究姓名：肖军良申请学位级别：硕士专业：桥梁与隧道工程指导教师：顾安邦2003.3.28晕庆交通学院坝l’论艾人跨J堑钔管混I疑l：拱桥施I‘厅}Ji的研究摘要本文以正在施工中的世界最人跨径的钢管混凝土拱桥一一巫峡长江人桥(1-孔460m)的科研项目为背景，置要进行了无支架缆索吊装斜拉扣挂施工力‘法、塔架扣架一体化的施工技术V,J

2、¨塔架合‘fl!；l瘦令性以及合理性。Jl：展了动态调索法和预榆I荔11e控制法的应川Ii：If究。”对洲索次数oj办法限制以及坝抬他难以精确计算的难趔．抛⋯了扣索动态调索法和颅抬I留蟹控制法暇介应用。并将最优化计算理沦引入到拱桥拱肋的吊装汁算·hI采刚～骱分析法米确定拱桥的合理施工状态，求H5各施：I：阶段的扣索索力和ItJtJlJJm装商度，模拟钢符拱肋的拼漱过税。关键词；钢管砼女醑f施：I：岔≤缆索吊≥r名力j，Ⅵ厂斜拉{罚It磊关键词；钢管砼撰侨施：L山法缆索吊装静力分骄斜拉{Il膏上暇庆交通学院坝_：论文人跨度钢管混凝’1：扒桥施

3、11斤浊的州究ABSTRACTOnthebackgroundofthescientificresearchitemsaboutlong—spanconcretefilledsteeltubulararchbridge：theWuGorgeYangtzeRiverBridge(a460mspan，willbetilelongestspanCFSTarchbridgeintheworld)，whichisstillunderc00structiou，thispaperisconcentrated011theconstructionmethodo

4、fcableerectionwithdiagonalfastening"andconnecting，andtheintegratedconstructiontechnologyofcableerection”‘benttowerfastening．Byanalyzingthestrengthandstabilityoffasteningtowerwithassemblyerectiontowerattachingintheprocessofitsinstallationandthearchribs’installationandthesta

5、ticanalysisofcableerectiontower，thepaperconfirmsthatthisconstructionmethodissafeandreasonable．Thispaperstudiestheapplicationofdynamica由ustingcablesandcontrollingwithpre-evaluatedheight．Inordertosolvetheproblemofthetimesandmethodologicalrestrictofadjustingcablesforceandaccu

6、ratelycalculatingthemagnitudeofpre·evaluatedheight，thepaperintroducestheoptimizationtheoryandmethodintotilecalculationoferectingarchribsintheintegratedconstructiontechnologyofdynamicadjustingcablesandcontrollingwithpre—evaluatedheight．ThefirstorderoptimizationmethodiSusedt

7、odeterminetherationalconstructionstateofconcrete-filledsteeltubulararchbridge．Thecablesforceandprearrangedheightofarchribsduringconstructionareobtained，andtheactualconstructionprocessofarchribsinstallationissimulated．KEYWORDS：CFSTArchBridge；ConstructionMethod；CableErection

8、；StaticAnalysis；ConstructionMethodofDiagonalFasteningandConnecting第一章绪论第一章绪论1．1钢管混凝土拱桥的发展