摘要
提出了一种研究半穿式钢桁梁桥与列车系统空间振动的分析方法 .桁梁模型可考虑横向弯曲、竖向弯曲、扭转、畸变以及纵向振动变形的影响 ,列车由一系列弹簧、阻尼器相连的多刚体模型来模拟 .采用计算机模拟方法 ,计算了提速列车以不同车速通过 4 0m半穿式钢桁梁桥时的空间振动响应 ,检算该桥是否具有足够的刚度及良好的运营平稳性 。
This paper presents one of the analytical methods for investigating spatial vibration of the half across steel truss bridege and the train systems.The model of the truss can be used to consider the effects of lateral flexural,vertical flexural,torsional,and distorted deformation of the bridge.The train is modeled as a multi rigid bodies connected by a series of springs and dampers.The computer simulation methods are adopted,the spatial vibration responses are calculated when the speed increase train runs over the half across steel truss bridge of the span of 40 m at various speeds in order to test whether the bridges have the sufficient rigidity and the operation stability is fine.The results are expected to provide reference for policy making departments.
出处
《长沙铁道学院学报》
CSCD
北大核心
2002年第1期36-40,共5页
Journal of Changsha Railway University
基金
铁道部科技开发计划项目 (97G A 5 )
关键词
半穿式钢衍梁
列车
振动
响应
桥梁
half across steel truss
train
vibration
response
