摘要
"公轨合一"型高架桥具有上下桥桥幅不相当的特点,桥梁结构在单侧汽车荷载作用下的空间扭转效应明显,振动传递到轨道梁上会对列车运行的平稳性造成影响。通过ANSYS有限元软件建立有限元模型,推导了10自由度列车垂向模型并通过分离迭代方法求解。考虑轨道不平顺,将汽车荷载考虑为移动力模型,分析了高架桥上汽车运行对列车运行的平稳性影响,以及轨道不平顺对列车运行的影响。
The ranges of bridge decks on car/train integrat- ed viaduct are of different sizes. The spatial torsion effect of bridge structure is obvious in the condition of the unilat- eral automobile loading, which could affect the running stability of railway train. In this paper, a finite element model of the viaduct is established by using ANSYS soft- ware, an analytical model of the train that uses 10 DOFs vibration system is derived. Because of the track irregulari- ty, the automobile loading is considered as a set of moving constant loading in a range of situations. The stability of train running on the viaduct influenced by the moving auto- mobile is analysed, the effect of the track irregularity on the response of train is also investigated.
出处
《城市轨道交通研究》
北大核心
2016年第9期15-18,共4页
Urban Mass Transit
