城市轨道交通人-车-桥系统动力响应与乘车舒适性分析  

Dynamic Responses and Riding Comfort Analysis of the Passenger-Train-Bridge System in Urban Rail Transit

作　　者：王少钦 王孝通 WANG Shaoqin;WANG Xiaotong(School of Science,Beijing University of Civil Engineering&Architecture,Beijing 100044,China;School of Civil Engineering,Beijing University of Civil Engineering&Architecture,Beijing 100044,China)

机构地区：[1]北京建筑大学理学院,北京100044 [2]北京建筑大学土木与交通工程学院,北京100044

出　　处：《铁道标准设计》2022年第9期78-85,共8页Railway Standard Design

基　　金：国家自然科学基金项目(51878036)。

摘　　要：为准确分析城市轨道交通列车在不同工况下运行时的乘车舒适性,提出一种乘客-列车-桥梁耦合振动分析模型,并编写相应计算程序。以北京地铁5号线一座钢-混组合箱梁桥为研究背景,计算乘客和列车动力响应,分析乘客与列车的动力响应差异。分别计算列车运行于桥梁线路与普通路基时乘客的动力响应,分析桥梁振动对乘客振动的影响;通过设置不同工况,分析乘客振动变化规律,并以乘客的动力响应作为评价指标,采用ISO-2631标准对乘客的乘车舒适性进行评价。计算结果表明,桥梁振动会明显增大乘客的动力响应;位于列车中部车厢的乘客会比位于两端车厢感受到更好的乘车舒适性;在同一节车厢内,车厢中部乘客的乘车舒适性优于车厢端部;随着列车行驶速度的提高,乘客的乘车舒适性会有明显降低。In order to study the riding comfort of the passengers on the urban rail transit train,a coupling vibration model for the passenger-train-bridge system is proposed and corresponding calculation programs are prepared.Taking a steel-concrete composite girder bridge on Beijing Metro Line 5 as an example,the dynamic responses of passengers and trains are simulated,and the differences of the dynamic responses between passengers and trains are analyzed.The dynamic response of passengers when the train running on the bridge line and the ordinary subgrade line is calculated respectively,and the influence of bridge vibration on passenger vibration is analyzed.By setting different working conditions,the variation of passengers’ vibration is analyzed.Taking the dynamic response of passengers as the evaluation index,the riding comfort of passengers is evaluated by ISO-2631 standard.The results show that the bridge’s vibration will definitely increase the passenger’s dynamic response,passengers in the middle carriages of the train have better riding comfort feeling than those in the head and tail ones;while in the same carriage,passengers on the middle seats feel better than those on both end seats;and with the increase of the train speed,the riding comfort of passengers will gradually reduce.

关 键 词：城市轨道交通 人-车-桥系统 动力响应 乘车舒适性 评价指标 

分 类 号：U260.11[机械工程—车辆工程] U441.3[交通运输工程—载运工具运用工程]