桥梁式高架车站的固有频率及振型分析  

Analysis of Natural Frequency and Vibration Mode of the Bridge Structural Elevated Station

作　　者：孙艳[1] 李俊杰[1] 

机构地区：[1]武汉科技大学,武汉430065

出　　处：《建材世界》2014年第1期64-67,共4页The World of Building Materials

摘　　要：桥梁式高架车站是高架车站的结构形式之一,其受力十分复杂,高速列车的行驶将引起桥梁的振动,这些振动不仅会影响到整个车站建筑,还会给周边的环境带来不利的影响。以某轻轨高架车站为例,通过有限元软件ANSYS对结构模型进行模态分析,研究其振动特性,提取出前十阶固有频率及振型。主要分析了钢轨扣件间距对结构固有频率的影响,提出相应的参考取值范围和改善此类结构振动影响的参考意见。The bridge structural elevated station as one of the elevated station,its stress is complex.That the high-speed train driving on bridge structure will cause the vibration of the bridge.The vibration will not only affect the entire station building,but also bring adverse effect to the surrounding environment.Based on an example of a light rail transit elevated station,this paper established the analysis model by using the finite element software ANSYS.Modal analysis was carried out on the model to study the vibration characteristics of the bridge structural station.this paper extracts the top ten order natural frequency and vibration mode.Then this paper mainly analysis the influence of fastener spac-ing on the structural natural frequency,and put forward the corresponding reference value range.The measures to im-prove the influence of this structure vibration are put forward.

关 键 词：高架车站 振动 模态分析 固有频率 钢轨扣件 

分 类 号：U448.28[建筑科学—桥梁与隧道工程] U441.3[交通运输工程—道路与铁道工程]