斜拉扣挂的钢管混凝土拱桥施工优化与仿真分析

《斜拉扣挂的钢管混凝土拱桥施工优化与仿真分析》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、AbstractConcrete-FilledSteelTubular(CFST)archbridgeisanarchbridgewhosearchribsaremadeofconcretefilledsteeltube．Owingtothesuperiorityofmaterialandconstruction，rapiddevelopmenthasbeenachievedinrecentyearsinourcountry．Theerectionofsteel—tubearchisonepivotalworkingprocedureinconstructionoftheCF

2、STarchbridge，andcable-stayedmethodisusuallyusedinthecable—hoistingandcantilever—assemblingerection．Basedonthegeneralsystemofcable—stayederectionofsteel—tubearchribsinCFSTarchbridge，afterresearchonexistingmethodsofcalculatingtensionforcesofbuckle—cableandanchor—cable，anideaisputforwardinthis

3、papertoascertainareasonableconstructionstateduringtheerectionofsteel—tubearchribswithcable—stayed，whichisconstantlengthofbuckle—cableandzerodisplacementofbuckle—tower．Andthewholeerectionprocessisanalyzedusingtheidea．Asaresult，anoptimizationmethodofthecable—stayederectionofsteel-tubearchribs

4、isestablished，i．e．“buckle-cablewithconstantlengthandbuckle—towerwithzerodisplacementsynthesizingmethod”．Bridgeisusuallyconstructedbystagesandcompletedstepbystep．Therefore，itisabasicjobtomakeasimulationanalysisfortheconstructioncontrolofbridge．Basedonresearchonequivalentladdersectionsandcabl

5、esimulationinplaneanalysis，usingthetechniqueofbuckle·-cablewithconstantlengthandbuckle--towerwithzerodisplacementsynthesizingmethod，thecable—stayederectionofsteel-tubearchribsoftheHeishipuXiangjiangBridgeisdeterminedinthispaper．Theconstructionprocedureoflong-spanbridgesiscomplicated，andther

6、earelotsofinfluencefactors，SOconstructionsurveybecomesthefoundationofconstructioncontr01．Inthispaper，amonitoringschemeofthecable—stayederectionofsteel—tubearchribsofHeishipuBridgeismade．Asanexample，theerectionprocedureofthewest144一metrespanissurveyed．Loftingcoordinatesofsteel—tubearchribsof

7、CFSTarchbridgeisthefoundationofline-shapecontrolofarchribs．Bywayofintroducinggeometriccharacterparametersofarchribsegmentsreflectinggeometricalfeatureofthewholearchinthepaper，asimulatingcomputationofloftingcoordinatesofsteel-tubearchribsismadentoanalyset