摘要
分析了等跨布置的铁路简支梁桥在共振速度下的动力特性 ,及车辆运行平稳性和稳定性。计算表明 ,等跨布置的简支梁桥在高速范围内会有 1～ 2个共振速度 ;桥梁的动力系数各孔变化不大 ,反映旅客乘坐舒适度的列车平稳性指标在前 4孔稍有变化 ,从第 5孔开始稳定 。
The bridge's dynamic features and train's running com fort under resonant speed of simply supported beams with equal spans are analyze d. Through calculation, we know that the simply supported beams with equal spans and the trains will have one to two resonant speeds during high speed, the brid ge's dynamic factors between different spans have little change, and the train's running comfort differs a little during no.1 to no.4 while, from no.5 span, it becomes stable. This means that the railway simply supported beams with equal sp ans are situable used for extra-long bridges.
出处
《铁道工程学报》
EI
2001年第3期51-55,共5页
Journal of Railway Engineering Society
关键词
高速列车
简支梁
动力系数
舒适度
high speed train
simply supported beams
dynamic factor
running comfort
