浮置板轨道结构系统振动模态分析  

Vibration modal analysis of floating slab track system

作　　者：焦金红 

机构地区：[1]上海嘉定轨道交通建设投资有限公司,上海201800

出　　处：《山西建筑》2011年第24期141-142,共2页Shanxi Architecture

摘　　要：利用有限元分析软件,建立浮置板轨道结构的三维有限元模型,进行模态分析,并计算出在不同橡胶支承刚度和扣件刚度组合条件下,两种密度混凝土浮置板的固有频率。通过对计算结果的分析,得出了混凝土板密度、橡胶支承刚度、扣件刚度对浮置板轨道结构系统振动特性的影响,为更好地了解浮置板轨道结构的减振降噪性能进行了探索。This paper builds a three dimensions finite element model to analyze the normal model of floating slab track by finite element software. Intrinsic frequency of floating slab track of two densities concrete slab is calculated in different combinations of rubber support pad stiffness and fastener stiffness. By analyzing result of the calculation, the influence of concrete slab density, rubber support pad stiffness and fastener stiffness for vibration charaeteristies of floating slab track system is abtained. It is an research to better understand the capability of reducing noise and vibration of floating slab track.

关 键 词：浮置板轨道结构 模态分析 有限元 

分 类 号：U213.2[交通运输工程—道路与铁道工程]