某公轨同层合建三塔斜拉桥列车走行性分析  

Analysis of Train Running Performance of Three-Tower Cable-Stayed Bridge on the Same Floor of Some Highway&Rail Transit

作　　者：颜轶航 YAN Yi-hang(Shanghai Urban Construction Design&Research InstituteCo.,Ltd.,Shanghai 200125,China)

机构地区：[1]上海市城市建设设计研究总院(集团)有限公司,上海200125

出　　处：《中国市政工程》2024年第2期23-26,141,142,共6页China Municipal Engineering

摘　　要：以某公轨同层合建三塔钢箱梁斜拉桥为例,分析公轨合建多塔斜拉桥的特点和主要问题。通过建立斜拉桥结构空间杆系有限元模型和列车车辆有限元模型,分析各种荷载工况下车桥耦合动力响应,对轨道列车的走行性、旅客过桥乘坐的舒适度等做出评价。结果表明,该三塔斜拉桥结构可以同时满足静力受力和列车走行安全性、舒适性的要求,对多塔斜拉桥体系梁端位置应予重点关注。Taking a three tower steel box girder cable-stayed bridge built on the same floor of a highway and rail as an example,the characteristics and main problems of the multitower cable-stayed bridge built on the same floor of the highway and rail are analyzed.By establishing the finite element model of cable-stayed bridge structure and the finite element model of train and vehicle,the vehicle bridge coupling dynamic response under various load conditions is analyzed,and the running performance of rail train and the comfort of passengers crossing the bridge are evaluated.The results show that the three tower cable-stayed bridge structure can meet the requirements of static force and safety and comfort of train running at the same time,and the beam end position of multi tower cable-stayed bridge system should be paid more attention.

关 键 词：公轨合建 斜拉桥 列车走行性 车桥耦合振动 

分 类 号：U448.12[建筑科学—桥梁与隧道工程]