梯形轨枕竖向振动模态分析  

THE VERTICAL VIBRATION MODAL ANALYSIS OF THE LADDER SLEEPER

作　　者：马娜[1] 李成辉[1] 

机构地区：[1]西南交通大学道路与铁道工程系,四川成都610031

出　　处：《工程力学》2010年第5期247-249,256,共4页Engineering Mechanics

基　　金：教育部新世纪优秀人才支持计划项目(NCET-05-0798)

摘　　要：梯形轨枕轨道作为一种新型的轨道结构,是基于纵枕轨道理论的基础研制的,在很多方面弥补了传统横向轨枕的不足,但其自身特点还有待进一步研究。已有的研究大多集中在静力方面,高速列车的发展引发的种种问题使得动力问题越来越突出。为了充分了解梯形轨枕的动力特性,并为进一步分析梯形轨枕轨道打下基础,论文对梯形轨枕的竖向振动模态进行分析,得到了其固有频率和振型,分析结果表明梯形轨枕具有整体性和传递性的特点。As a new type of track,Ladder Sleeper is developed based on the theory of Longitudinal sleeper. It overcomes the shortage of the traditional Lateral sleeper in many aspects,but some of its important features remain unaddressed. The existing research mostly focuses on the static behaviors. With the development of the high-speed train,the dynamic problems of railway are becoming more and more prominent. In order to understand the dynamic characteristics of Ladder Sleeper fully and to lay the foundation for the analysis of Ladder Sleeper Track,this paper investigates the vertical vibration modal to get the natural frequency and vibration mode. The results show that Ladder Sleeper has the characteristic of integrity and transitivity.

关 键 词：梯形轨枕 模态分析 固有频率 振型 整体性 传递性 

分 类 号：U213.3[交通运输工程—道路与铁道工程]