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。
In this paper, the factors to influence the vertical resonance of a simply supported girder Bridges are investigated systematically.
为避免桥梁共振，设计时应满足第一阶竖向自振频率大于车辆最大速度与车辆长度的比值。
To avoid the most dangerous resonance, the first vertical frequency of the bridge should be greater than the ratio of the maximum vehicle speed to the vehicle length in design.
应用推荐