减振型无砟轨道轨枕结构对比分析  

Comparison and Analysis of Sleepers in Low Vibration Track System( LVT)

作　　者：姜浩[1] 赵坪锐[1] 刘观[1] 

机构地区：[1]西南交通大学高速铁路线路工程教育部重点实验室,成都610031

出　　处：《铁道标准设计》2014年第10期51-56,共6页Railway Standard Design

基　　金：国家自然科学基金项目(51008258);中央高校基本科研业务费专项资金(SWJTU12CX065)

摘　　要：减振型无砟轨道形式较多,典型的有弹性支承块式轨枕和SAT S312双体轨枕,以及一种新型的减振型轨枕——弹性长枕。为了给无砟轨道设计中轨枕形式及参数的选取提供参考,通过建立弹性长枕的三维有限元模型,考虑避免弹性长枕结构与线路激振发生共振,从弹性长枕的枕下胶垫刚度、侧面套靴刚度、埋深及支撑长度4个方面进行模态分析,给出弹性长枕合理的参数匹配,再对3种轨枕做出对比分析。结果表明:3种减振型轨枕中,弹性长枕的结构最优,SAT S312双体轨枕次之,弹性支承块式轨枕最差。Low vibration track system （LVT） has many forms, including typically elastic supporting block sleeper, SAT $312 sleeper, and a new low vibration sleeper-elastic long sleeper. In order to provide references for design of ballastless track in selecting sleeper and parameters, a 3D finite element model of elastic long sleeper is established to conduct modal analysis in perspectives of rubber pad stiffness, boots side stiffness, buried depth and supporting length of the elastic long sleeper, in order that the resonance between elastic long sleeper and the track can be avoided. As a result, reasonable matching parameters are obtained. And then, three types of sleepers are compared and analyzed. The results show that, of the three types of sleepers, the structure of elastic long sleeper is the best, SAT $312 sleeper is the second, and the elastic supporting block sleeper comes the last.

关 键 词：无砟轨道 轨枕 振动 刚度 共振 

分 类 号：U213.244[交通运输工程—道路与铁道工程]