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桥梁在船舶撞击下的响应及损伤状态仿真分析.docx

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桥梁在船舶撞击下的响应及损伤状态仿真分析 Abstract Bridgeisanessentialpartofaship,anditplaysasignificantroleinensuringthesafetyofthecrewduringnavigation.However,bridgesarealsovulnerabletodamagewhenshipscollidewithothervessels,rocks,orotherobstacles.Thispaperaimstosimulatetheresponseanddamagestateofbridgestructuresundershipcollisionscenariosusingnumericalsimulationmethods.First,afiniteelementmodelofabridgewasestablished,followedbyadynamicanalysisofthecollisionprocess.Theresultsshowedthatthecollisionforceexertedonthebridgewassignificant,resultinginsignificantdeformationanddamageofthebridgestructure.Additionally,theeffectofdifferentcollisionanglesandvelocitiesonthebridgeresponsewasalsoinvestigated.Thisstudyprovidesascientificbasisfordesigningsafeandreliableshipbridges. Keywords:Bridge;ShipCollision;FiniteElementAnalysis;DamageSimulation Introduction Shipcollisionaccidentsareasignificantcauseofmaritimeaccidents,oftenleadingtoseverelossoflife,environmentaldamage,andeconomiclosses.Theimpactofashipcollisiononabridgecanbehighlydestructive,causingsignificantstructuraldamageorevenstructuralcollapse.Inrecentyears,significantprogresshasbeenmadeinshipcollisionsimulationandanalysismethods.Still,fewstudieshavefocusedontheimpactofshipcollisionsonbridgestructures. Thepurposeofthispaperistosimulatetheresponseanddamagestateofbridgestructuresundershipcollisionscenariosusingnumericalsimulationmethods.Theresultsofthisstudywillprovideascientificbasisfordesigningsafeandreliableshipbridges. NumericalSimulationMethods Thenumericalsimulationmethodusedinthisstudywasthefiniteelementmethod(FEM).ANSYSsoftwarewasusedtoestablishthebridge'sfiniteelementmodelandperformthetime-domaindynamicanalysis. ModelingofBridgeStructure Thebridgestructureselectedforthisstudywasthepilothouseofaship.Athree-dimensional(3D)modelofthepilothousewascreatedusingANSYSsoftware.Themodelwasbasedontheactualsizeandshapeofthepilothouse.ThebridgestructurewasmodeledusingtheshellelementinANSYSsoftware. Thematerialpropertiesusedintheanalysiswereasfollo