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拱桥成桥状态下吊杆索力优化.docx

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拱桥成桥状态下吊杆索力优化 Abstract: Thecableforcesofsuspensionbridgesplayacrucialroleinmaintainingtheirstructuralstability.Inthispaper,weaimtooptimizethecableforcesofasuspensionbridgeinastateofcompletion,i.e.,thearchbecomesafixedstructure.Weproposeamethodologytooptimizethecableforcesbyminimizingthebendingmomentandshearforceofthedeck,aswellasthestaticanddynamiccablestresses.TheoptimizationprocessisperformedusingMATLABsimulationsandhypotheticalbridgedatatodemonstratetheeffectivenessofourapproach.Theresultsshowthattheproposedmethodologycanimprovetheperformanceofsuspensionbridgesintermsofstructuralstability,cableforces,andweightwithoutcompromisingtheirsafety. Introduction: Suspensionbridgesareuniquestructuresthatemploycablesandsuspenderstosupportthedeck.Thestabilityandsafetyofsuspensionbridgesdependlargelyonthecableforces.Inthecaseofasuspensionbridgeinthecompletionstate,i.e.,thearchhasformedafixedstructure,theoptimizationofcableforcesbecomesparamount.Suspensionbridgesinthecompletionstatehaveahighbendingmomentandshearforceduetotheirfixedarchstructure,whichcanbeefficientlyreducedbyoptimizingcableforces.Theoptimizationprocessofcableforcesnotonlyimprovesstructuralstabilitybutalsoreducestheweightandcostofthebridge. Objective: Theprimaryobjectiveofthispaperistoproposeamethodologyforoptimizingcableforcesinthecompletionstateofasuspensionbridge.Themethodologyoptimizesthecableforcesbyminimizingthebendingmomentandshearforceonthedeck,aswellasthestaticanddynamiccablestresses. Methodology: Theproposedmethodologyconsistsoftwostages:datacollectionandoptimizationprocess. DataCollection: Inthedatacollectionstage,wegatherthenecessaryinformationaboutthesuspensionbridge,includinggeometricalandmechanicalparameterssuchascablespacing,deckheight,decklength,cabletensioncapacity,andwindload,etc.Thisdatacollectionstagedeterminesthefoundationforthecableforceoptimization. OptimizationProcess: Theoptimizationprocessinvolvestwoiterativemethods,namelythestaticanddynamicoptimizationmethods. StaticOptimizationMethod