西南交通大学学报 2006, 41(4) 447-451 DOI:     ISSN: 0258-2724 CN: 51-1277/U

本期目录 | 下期目录 | 过刊浏览 | 高级检索                                                            [打印本页]   [关闭]
论文
扩展功能
本文信息
Supporting info
PDF(KB)
[HTML全文]
参考文献
服务与反馈
把本文推荐给朋友
加入我的书架
加入引用管理器
引用本文
Email Alert
文章反馈
浏览反馈信息
本文关键词相关文章
道岔
刚度
无碴轨道
均匀化
有限元法
本文作者相关文章
陈小平
王平
PubMed
Article by CHEN Xiaoping
Article by WANG Ping

无碴道岔轨道刚度分布规律及均匀化

陈小平, 王平

西南交通大学土木工程学院, 四川, 成都, 610031

摘要

为了揭示道岔铺设在无碴轨道上的刚度分布规律,建立了道岔轨道刚度有限元计算模型.模型中考虑了钢轨抗弯刚度、扣件刚度、基础刚度、滑床台、护轨及间隔铁等因素的影响.以12号提速道岔为例,计算了道岔铺设在无碴轨道上的整体刚度.结果表明:轨道刚度在纵向和横向都存在严重不平顺,里轨与基本轨的整体刚度比最大约为2.418,里轨整体刚度纵向变化率最大约为242%.此外,为了消除道岔铺设在无碴轨道上的刚度不平顺,运用所建立的模型,探讨了均匀道岔轨道刚度分布的扣件刚度设置方式.

关键词 道岔   刚度   无碴轨道   均匀化   有限元法  

Distribution Regularity and Homogenization of Track Rigidity for Ballastless Turnout

CHEN Xiaoping, WANG Ping

School of Civil Eng., Southwest Jiaotong University, Chengdu 610031, China

Abstract:

To identify the variation rule of track rigidity of a turnout laying on ballastless track,based on FEM(finite element method) a calculational model for track rigidity was established.In the model,the flexural rigidity of rails,the rigidity of fastenings,the rigidity of subgrade,slide plate,guard rail and spacer block are taken into account.The track rigidity of a Chinese No.12 speeding-up turnout,as an example,was calculated.The calculational results show that the rigidity of track is very uneven in the lognitudinal and transverse directions,the maximum ratio of total rigidity of inner rail and outer rail is 2.418,and the maximum longitudinal variety of total rigidity of inner rail reaches up to 242%.In addition,the disposal approach of rigidity of rail fastenings was discussed based on the model so as to eliminate the variety of track rigidity of a turnout and homogenize the rigidity of track.

Keywords: turnout   rigidity   ballastless track   homogenization   finite element method  
收稿日期 2005-12-20 修回日期  网络版发布日期  
DOI:
基金项目:

教育部博士点基金资助项目(20050613007);教育部新世纪优秀人才支持计划项目(NECT-05-0798)

通讯作者:
作者简介: 陈小平(1978- ),男,博士研究生,研究方向为高速、重载、城市轨道交通轨道结构及轨道动力学,电话:028-87601210,E-mail:cxp193@163.com

参考文献:
[1] LOPEZ P A.The vertical stiffness of the track and the deterioration of high speed lines[J].Revista de Obras Publicas,2001 (11):7-22.
[2] WU T X,THOMPSON D J.The effects of local preload on the foundation stiffness and vertical vibration of railway track[J].Journal of Sound and Vibration,1999,219(5):881-904.
[3] 赵国堂.铁路轨道刚度的确定方法[J].中国铁道科学,2005,26(1):1-6.ZHAO Guotang.Method for determining the rigidity of railway track[J].China Railway Science,2005,26(1):1-6.
[4] 徐志胜,翟娩明,王其昌.轨道刚度对高速轮轨系统振动噪声的影响[J].噪声与振动制,2004(1):15-18.XU Zhisheng,ZHAI Wanming,WANG Qichang.Influence of track stiffness on vibration and noise of high-speed wheel/rail system[J].Noise and Vibration Control,2004(1):15-18.
[5] 张格明.轨道刚度合理评价指标的研究[J].中国铁道科学,2002,23(1):51-57.ZANG Geming.Research on right level of track structure stiffness and track-part stiffness[J].China Railway Science,2002,23(1):51-57.
[6] 刘学毅.轨道刚度影响分析及动力学优化[J].西南交通大学学报,2004,39(1):1-5.LIU Xuedyi.Effect analysis of track stiffness on dynamic characteristics of wheel-rail system and its dynamic optimization[J].Journal of Southwest Jiaotong University,2004,39(1):1-5.
[7] 王平.道岔竖向刚度沿线路纵向分布规律的探讨[J].西南交通大学学报,1999,34(2):144-147.WANG Ping.A study on variation of the vertical rigidity of turnout along the longitudinal direction of track[J].Journal of Southwest Jiaotong University,1999,34(2):144-147.
[8] 罗雁云,朱剑月.线路道岔轨下刚度改变对轮轨动力性能影响研究[J].电力机车与城轨车辆,2004,27(5):9-12.LUO Yanyun,ZHU Jianyue.Investigation on dynamic characteristic of wheel/rail by changing the stiffness under the railway track turnout[J].Electric Locomotives & Mass Transit Vehicles,2004,27(5):9-12.
[9] 王平,陈小平.客运专线道岔轨道刚度合理设置研究[R].成都:西南交通大学土木工程学院,2005.
本刊中的类似文章

文章评论 (请注意:本站实行文责自负, 请不要发表与学术无关的内容!评论内容不代表本站观点.)

Copyright 2008 by 西南交通大学学报