地震荷载和列车制动力作用下铁路桥梁振动控制  

Vibration Control of Railway Bridges under Seismic Load and Braking Force of Train

作　　者：陈永祁[1] 郑成成 马良喆[1] 郑久建[2] CHEN Yongqi;ZHENG Chengcheng;MA Liangzhe;ZHENG Jiujian(Beijing Qitai Shock Control and Scientific Development Co Ltd,Beijing 100037,China;School of Civil Engineering and Mechanics,Yanshan University,Qinhuangdao Hebei 066004,China)

机构地区：[1]北京奇太振控科技发展有限公司,北京100037 [2]燕山大学建筑工程与力学学院,河北秦皇岛066004

出　　处：《中国铁路》2022年第2期70-76,共7页China Railway

基　　金：河北省自然科学基金项目(E2019203413)。

摘　　要：列车在运行以及刹车状态下会对桥体产生非常明显的动力作用。区别于地震作用,刹车荷载对桥体的作用时间和频次较长,但力幅值相对较小,在长期运行中易引起桥体和附属设施疲劳及稳定性下降。通过对铁路桥梁刹车荷载的研究,介绍几种主要的控制方法及在控制刹车荷载时存在的一些应用误区,并给出应用建议。A train will have a very significant dynamic effect on bridge during operation and braking.Different from seismic action,the braking load has a long action time and a high action frequency on the bridge,but the amplitude of force is relatively small,which is easy to cause fatigue and stability degradation of bridge and auxiliary facilities in the long-term operation.Through the study on the braking load of railway bridges,this paper introduces several main control methods and some misapplications existing in the control of braking load,and puts forward suggestions for application.

关 键 词：铁路桥 刹车荷载 锁定装置 阻尼器 纵向振动 

分 类 号：U24[交通运输工程—道路与铁道工程]