地震波激励下城轨车辆-轨道系统耦合动力特性及预警安全控制参数  

Dynamic Characteristics and Early Warning Safety Control Parameters of Urban Rail Vehicle-Track Coupled System under Seismic Wave Excitation

作　　者：孙加林 杨飞 马莉 支洋 梁雪江 张骞[5] 冀昆[6] SUN Jialin;YANG Fei;MA Li;ZHI Yang;LIANG Xuejiang;ZHANG Qian;JI Kun(Infrastructure Inspection Research Institute,China Academy of Railway Sciences Corporation Limited,Beijing 100081,China;Railway Science and Technology Research and Development Center,China Academy of Railway Sciences Corporation Limited,Beijing 100081,China;Department of Track,Communication&Signaling and Power Supply,China State Railway Group Co.,Ltd.,Beijing 100844,China;Track Department,China Railway Beijing Group Co.,Ltd.,Beijing 100860,China;College of Mechanical and Electrical Engineering,Qingdao University,Qingdao Shandong 266071,China;Key Laboratory of Earthquake Engineering and Engineering Vibration,Institute of Engineering Mechanics,China Earthquake Administration,Harbin Heilongjiang 150080,China)

机构地区：[1]中国铁道科学研究院集团有限公司基础设施检测研究所,北京100081 [2]中国铁道科学研究院集团有限公司铁道科学技术研究发展中心,北京100081 [3]中国国家铁路集团有限公司工电部,北京100844 [4]中国铁路北京局集团有限公司工务部,北京100860 [5]青岛大学机电工程学院,山东青岛266071 [6]中国地震局工程力学研究所地震工程与工程振动重点实验室,黑龙江哈尔滨150080

出　　处：《中国铁道科学》2022年第4期157-166,共10页China Railway Science

基　　金：国家重点研发计划项目(2017YFC1500803)。

摘　　要：为研究地震作用下车辆-轨道系统耦合振动并确定地震报警阈值,选取3类场地在不同振动振幅条件下的15种典型地震波,考虑地震波和轨道不平顺的叠加作用,对建立的车辆-轨道刚柔耦合动力学模型进行激励,分析典型地震波对路基地段车辆运行平稳性、安全性的影响规律及地震预警安全控制参数。结果表明:列车各项动力学指标受运行速度、地震波场地类型的影响较大,但受地震波幅值的影响相对较弱;当车速达到100 km·h^(-1)时,不论地震波的场地类型以及幅值大小,均会出现轮重减载率超限的情况;在幅值不超过100 cm·s^(-2)的地震波作用下,Ⅰ类和Ⅱ类场地均限速80 km·h^(-1)、Ⅲ类场地限速40 km·h^(-1)。综合考虑场地类型、列车运行安全性和平稳性指标,城轨地震报警阈值宜为40 cm·s^(-2)。To study the coupled vibration of vehicle-track system under earthquake and determine the earthquake alarm threshold,15 kinds of typical seismic waves in three categories of site types under different vibration amplitudes were selected,and the superposition of seismic wave and track irregularity was considered.The established rigid-flexible coupling dynamic model of vehicle-track was excited,and the influence laws of typical seismic waves on vehicle running stability and safety in subgrade area and safety control parameters of earthquake early warning were analyzed.The results show that the train dynamic indexes are greatly affected by the running speed and the site type of seismic wave,but relatively weakly by the seismic wave amplitude.When the running speed reaches 100 km·h^(-1),regardless of the site type and amplitude of seismic wave,the wheel load reduction rate will exceed the limit.Under the seismic waves with amplitudes less than 100 cm·s^(-2),the speed limits of categoryⅠandⅡsites are 80 km·h^(-1),and that of categoryⅢsite is 40 km·h^(-1).It is suggested that the seismic alarm threshold of 40 cm·s^(-2) is appropriate for urban rail when taking into account the type of site,the safety and stability indexes of train operation,synthetically.

关 键 词：地震波 城轨车辆-轨道刚柔耦合 动力学指标 安全控制参数 报警阈值 

分 类 号：U211.5[交通运输工程—道路与铁道工程]