摘要
德国低干扰谱已在车桥耦合动力仿真中得到广泛应用,随着中国高速铁路的大规模运营,依据实测几何参数研究编制的中国无砟轨道高速谱也处于推广应用之中。为探究2种高速轨道谱在车桥耦合中的适用性,以某主跨280 m的高速铁路斜拉桥方案为工程背景,基于通用有限元软件,采用CRH3动车组在300~500 km/h速度区间分别以2种轨道谱转换的不平顺进行车桥耦合动力仿真分析,以高速铁路设计规范为依据,对比分析车辆和桥梁的动力响应结果,获得了2种不平顺对车辆与桥梁各控制指标的影响差别。研究成果可为2种典型轨道谱在高速铁路大跨桥梁车桥耦合分析中的适用性提供参考。
German low-interference track spectrum has been widely used in vehicle bridge coupling dynamic simulation.With the large-scale operation of Chinese high-speed railway,the high-speed spectrum of ballastless track in China is also in application,based on measured geometric parameters.In order to explore the applicability of two kinds of high-speed track spectrum in vehicle bridge coupling,this study takes a high-speed railway cable-stayed bridge scheme with main span of 280 m as the engineering background.Based on the general finite element software,CRH3 train was adopted in the speed range of 300~500 km/h with two kinds of track spectrum conversion,to compare the vehicle and bridge according to the design specification of high-speed railway.According to the dynamic response results of the beam,the difference of the influence of two kinds of irregularities on the control indexes of vehicle and bridge is obtained.The research results can provide reference for the applicability of the two kinds of track spectra in the vehicle bridge coupling analysis of high-speed railway long-span bridges.
作者
郑晓龙
徐昕宇
陈列
郭建勋
ZHENG Xiaolong;XU Xinyu;CHEN Lie;GUO Jianxun(China Railway Eryuan Engineering Group Co.,Ltd.,Chengdu 610031,China)
出处
《铁道科学与工程学报》
CAS
CSCD
北大核心
2021年第5期1090-1097,共8页
Journal of Railway Science and Engineering
基金
中铁二院重点科研课题资助项目(KSN202039)。
关键词
车桥耦合
轨道不平顺
中国高速轨道谱
德国低干扰谱
高速铁路
vehicle-bridge coupling vibration
track irregularity
Chinese high speed track spectrum
German low-interference track spectrum
high-speed railway
作者简介
通信作者:郑晓龙(1976−),男,四川自贡人,教授级高级工程师,从事车桥耦合动力仿真研究,E−mail:51978974@qq.com。
