跨坐式单轨列车通过公轨合建斜拉桥时的乘坐舒适性研究  

Research on Ride Comfort of Straddle-type Monorail Vehicle Traveling on Combined Highway and Railway Cablestayed Bridge

作　　者：戴宝锐 吴定俊[1] 李奇[1] 沈哲亮 DAI Baorui;WU Dingjun;LI Qi;SHEN Zheliang(Department of Bridge Engineering,Tongji University,200092,Shanghai,China)

机构地区：[1]同济大学土木工程学院,上海硕士研究生200092

出　　处：《城市轨道交通研究》2018年第4期88-93,共6页Urban Mass Transit

摘　　要：为探究影响公轨合建斜拉桥跨坐式单轨列车乘坐舒适性的因素,以某公轨合建同层布置的斜拉桥为背景,根据7自由度单轨列车车辆模型和4种汽车车辆模型以及模拟得到的汽车车流模型建立了列车-汽车-桥梁耦合系统。利用基于模态叠加法原理编写的VBC2.0程序求解耦合振动方程,探讨了列车车速、列车载重、汽车车流、主梁及横梁刚度对单轨列车乘坐舒适性的影响。结果表明:随车速增加,单轨列车乘坐舒适性变差,但发生车桥共振时除外;随载重增加,单轨列车乘坐舒适性变好;主梁或横梁刚度越低,单轨列车乘坐舒适性越差;主梁或横梁刚度较低时,汽车密集流和拥挤流会对单轨列车乘坐舒适性产生不利影响。To explore the factors affecting ride comfort of straddle-type monorail vehicle traveling on combined highway and railway cable-stayed bridge,a combined cable-stayed bridge is taken as the background,a train-vehicle-bridge coupling system is established base on the monorail vehicle model with 7 freedom degree,4 kinds of car model and the vehicle flow model obtained by simulation.VBC2.0 program is used to solve the coupling vibration equations according to the principle of modal superposition method,the effects of train speed,train load,vehicle flow,main beam and cross beam stiffness on ride comfort of monorail vehicle are discussed.This study reveals that with the increase of speed,the ride comfort of monorail vehicle becomes poor,except when the vehicle-bridge resonance occurs.With the increase of load,the ride comfort of monorail vehicle becomes better.The lower main beam or cross beam stiffness is,the worse ride comfort of monorail vehicle becomes.If the stiffness of the main beam or cross beam is comparatively low,the dense flow of cars and the congested flow would adversely affect the ride comfort of monorail vehicle.

关 键 词：跨坐式单轨列车 汽车 公轨合建斜拉桥 耦合系统 乘坐舒适性 

分 类 号：U448.121[建筑科学—桥梁与隧道工程] U232[交通运输工程—道路与铁道工程]