悬挂式单轨轨道梁桥在列车制动力作用下的动力响应  

Dynamic Responses of Suspended Monorail Beam Bridge under Train Braking Forces

作　　者：王江浩 WANG Jianghao(China Railway Liuyuan Group Co.,Ltd.,300308,Tianjin,China)

机构地区：[1]中铁第六勘察设计院集团有限公司,天津300308

出　　处：《城市轨道交通研究》2021年第6期39-41,共3页Urban Mass Transit

摘　　要：以中唐悬挂式单轨试验线为依托,采用有限元软件建立结构模型,分别计算了3种列车制动力作用下轨道梁桥的动力响应。结果表明:在列车制动力作用下,轨道梁梁端纵向位移和墩底剪力呈波浪式增大;列车在轨道梁上制动完成时,轨道梁在纵向呈衰减振动;列车制动力越大,轨道梁梁端纵向位移、速度、加速度和墩底剪力也越大,并且列车制动完成后的振幅也越大。Taking the Zhongtang suspended monorail test line as the background,finite element software is adopted to build structure model,the dynamic responses under three kinds of train braking forces are calculated respectively.The results show that,under train braking forces,the longitudinal displacement of the track beam and the bottom shear of bridge pier increase in wave form;attenuation vibration appears in longitudinal direction on track bream when train braking completes on it;with the increase of braking force,the longitudinal displacement,velocity,acceleration of the track beam and bottom shear of bridge increase,and the amplitude of the track beam increases after the train braking is completed.

关 键 词：悬挂式单轨 轨道梁桥 列车制动力 动力响应 有限元分析 

分 类 号：U441.7[建筑科学—桥梁与隧道工程] U234[交通运输工程—道路与铁道工程]