一种铁路车桥耦合振动三维仿真的实现
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摘要
利用ANSYS用户可编程接口技术,设计了一种轮轨动力接触单元。结合列车和下部结构形成三维车桥墩空间耦合振动模型。以大石河大桥为例进行了仿真分析,再现了货车通过时该桥的横向振动特性。
A kind of dynamic wheel-track contact element is designed by the technology of ANSYS User Program Features. A 3D vehicle-bridge-pier coupling dynamic model is built by the element with combination of the vehicle and the substructure. Simulation analysis on the Dashihe Bridge is carried out. Its transversal vibration characteristic reappears well when the freight train passes through it.
A kind of dynamic wheel-track contact element is designed by the technology of ANSYS User Program Features. A 3D vehicle-bridge-pier coupling dynamic model is built by the element with combination of the vehicle and the substructure. Simulation analysis on the Dashihe Bridge is carried out. Its transversal vibration characteristic reappears well when the freight train passes through it.
引文
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[2]InglisCE.AmathematicalTreatiseonVibrationsinRail wayBridges[J].London:CambridgeUniv.Press,1934.
[3]夏禾,陈英俊.车梁墩体系动力相互作用分析[J].土木工程学报,1992,25(2):3—12.
[4]周宏业,马长水.铁路桥墩的纵向耦联振动分析[J].铁道学报,1985,7(3).
[5]翟婉明.车辆轨道耦合动力学[M].北京:中国铁道出版社,2002.
[6]曹雪琴.钢桁梁桥横向振动[M].北京:中国铁道出版社,1991.
[7]曾庆元.形成矩阵的对号入座法与桁段有限元法[J].铁道学报,1986,8(2).
[8]朱,等.考虑土结构相互作用的桩基桥墩三维地震反应分析[J].兰州铁道学院学报,1990,9(4):1—3.
[9]GreenMF.etal.EffectsofVehicleSuspensionDesignon DynamicsofHighwayBridges[J].JournalofStructural Engineering,ASCE.1995,121:272-282.
[10]岳祖润.铁路桥梁三维耦合振动仿真与墩台状态评估[D].北京:铁道科学研究院,2002.
[11]夏禾.车辆与结构动力相互作用[M].北京:科学出版社,2002.
[12]CloughRW,PenzienJ.DynamicsofStructures[M].Mcgraw HillInc.,1975.
[13]岳祖润,等.铁路桥梁模态特性研究[J].铁道学报,2003,25(3):91—95.
[14]YangFH.ResearchesonVibrationsofcable stayed bridgeundermovingvehicles[D].Beijing:ChinaAcade myofRailwaySciences,1996.
[15]罗林.轨道随机干扰函数[J].中国铁道科学,1982,13(1):74—110.
[16]ANSYSUserProgrammingInterface[M].ANSYSinc.,1998.
[17]TabarrokB.Inducedtransversevibrationofbridgesby movingvehicles[J].TransactionsoftheCanadianSociety forMechanicalEngineering,2000,(1):191—198.
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