铁路简支梁桥竖向共振影响因素的分析  

ANALYSIS OF THE FACTORS INFLUENCING VERTICAL RESONANCE OF SIMPLY SUPPORTED RAILWAY GIRDERS

作　　者：苏木标[1,2] 李建中[3] 邹振祝[4] 

机构地区：[1]哈尔滨工业大学 [2]石家庄铁道学院,石家庄050043 [3]同济大学 [4]石家庄铁道学院

出　　处：《工程力学》2003年第4期60-66,共7页Engineering Mechanics

基　　金：铁道部科技发展计划资助项目(96G19A)

摘　　要：采用车-桥系统模型,对影响铁路简支梁桥竖向共振的各种因素进行了分析。分析结果表明:列车静轴重荷载是引起简支梁桥竖向共振现象的主要原因,而其它因素(如桥梁本身的跨度、刚度及阻尼,车辆的长度、轮对的质量、悬挂弹簧的刚度和阻尼等)对桥梁竖向共振的发生和发展也有着重要的影响。The factors to influence the vertical resonance of a simply supported girder bridges were investigated systematically. The vehicle-bridge interaction system model was used in the analysis. The results show that the main factor to cause the vertical resonance phenomenon of the bridges is the train's axle weight moving loads; other factor (such as the span, stiffness and damping of the bridge, the length of the vehicles, the mass of the vehicle's wheel-set, the spring stiffness and damping of the vehicle's suspension system, and so on) also have important influence on the occurrence and development of the vertical resonance of railway bridge.

关 键 词：简支梁桥 车-桥系统 共振现象 影响因素 

分 类 号：U448.217[建筑科学—桥梁与隧道工程] TU311.3[交通运输工程—道路与铁道工程]