摘要
地震激励对高速车辆-简支箱梁桥系统动力响应的影响关系到高速铁路运营安全。基于车辆-轨道耦合动力学和列车-轨道-桥梁动力相互作用理论,运用有限元和多体动力学方法,建立高速铁路桥梁区段车辆-轨道-桥梁耦合系统动力学模型,分析在人工地震波作用下高速铁路车-线-桥耦合系统动力响应。结果表明:地震激励对轨道板、支撑层和桥梁的横向振动特性的影响大于对垂向振动特性的影响,桥梁结构对地震激励的敏感程度大于轨道结构;车辆运行速度对系统垂向振动特性的影响大于对横向振动特性的影响。研究结论可为地震荷载作用下高速铁路安全运营提供理论依据。
The influence of seismic excitation on the dynamic response of high-speed vehicle-simply supported box girder bridge system is related to the operation safety of high-speed railway.Based on the theories of vehicle-rail coupling dynamics and train-rail-bridge dynamic interaction,the dynamic model for vehicle-rail-bridge coupling system in high-speed railway bridge section was established by using the finite element and multi-body dynamics methods,and the dynamic response of vehicle-rail-bridge coupling system of high-speed railway under the action of artificial seismic waves was analyzed.Results show that the influence of seismic excitation on the lateral vibration characteristics of track slab,support layer,and bridge is higher than that on the vertical vibration characteristics,and the sensitivity of bridge structure to seismic excitation is higher than that of track structure.The influence of vehicle speed on the vertical vibration characteristics of system is higher than that on the lateral vibration characteristics.The study results can provide a theoretical basis for the safe operation of high-speed railway under seismic load.
作者
马理超
王相平
王戊寅
张旭
李强
李国芳
MA Lichao;WANG Xiangping;WANG Wuyin;ZHANG Xu;LI Qiang;LI Guofang(School of Mechatronic Engineering,Lanzhou Jiaotong University,Lanzhou 730070,Gansu,China;Jiayuguan Locomotive Depot,China Railway Lanzhou Group Co.,Ltd.,Jiayuguan 735100,Gansu,China)
出处
《地震工程学报》
CSCD
北大核心
2023年第5期1231-1240,共10页
China Earthquake Engineering Journal
基金
国家国家自然科学基金资助项目(12162020,12262017)
甘肃省自然科学基金项目(22JR5RA329,23JRRA915,23JRRA911)
甘肃省教育厅优秀研究生“创新之星”项目(2023)
兰州交通大学基础研究拔尖人才项目(2022JC14)。
关键词
高速列车
地震激励
桥轨关系
轮轨关系
耦合振动
high-speed train
seismic excitation
bridge-rail relationship
wheel-rail relationship
coupling vibration
