桥上无缝线路钢轨伸缩调节器设置问题探讨.pdf

第58卷第8期
铁道标准设计
Vol 58 No8
2014年8月
RAILWAY STANDARD DESIGN
Aug-2014
文章编号:1004-2954(2014)08-0027-03
桥上无縫线路钢轨伸缩调节器设置问题探讨
丁静波,刘亚航,谷呈用
(中铁工程设计咨洵築团有限公司轨道工程设计硏究院,北京100055)
摘要:钢轨伸缩调节器对协调长大桥上无缝线路因梁体温差引起的梁端及长钢轨仲輪位移起到重要作用。对调
节器设置问匙进行系统论述,介绍国内调节器设计使月惰讥,建议桥楽和軌道一体化设计,谨在曲线上设置调节
器:并结合工程策例,计算分析了调节器设置计算方法以及调节器结构仲编値,并且根据现场调研情凡、提出设置
调节器的建议
关键词:槲上无発縯路;钢轨伸缩调节器;设
中图分类号:U213.93文献标识码:ADOl:10.13238/j.i8sn.1004-2954.2014.08,006
Research on Relevant Issues in Arrangement of Rail Expansion
Joint of Continuous Welded Rail on Bridge
DING Jing-bo, LIU Ya-hang, GU Cheng-peng
Design and Researeh Institute of Track Engineering, China Railway Engineering Consultancy Group Co., Id, Beijing 100055, China
Abstract: Rail expansion joint plays an important role in coordinating the girder ends and long steel
rail, s expansion and contraction displacement, which is caused by temperature difference of continuous
welded rail on long and major bridge. This paper systematically expounded relevant issues about rail
expansion joint, and introduced Lhe design and application situation of rail expansion joints in China at
present. Furthermore, this paper suggested that: the bridge and track of railway should he designed in
the form of integration with each other, and the designers should be cautious about arranging rail
expansion joint on curved line. In addition, by combining with engineering project cases, this paper
analyzed the calculation method of rail expansion joint, and calculated the expansion and contraction
of rail expansion joint. Finally, based on field investigation, this paper made suggestion un how to
arrange rail expansion joints
Key words: continuous welded rail on bridge; rail expansion joint; arrangement
概述
TB10082-2005)对于桥上铺设无缝线路儆了如下规
钢轨伸缩调节器(简称调节器)是重要的轨道部定:温度跨度大于100m的钢梁,每一温度跨度应铺设
件,其功能是:协调长大桥梁因梁体温差引起的梁端伸1组调节器;温度跨度大于120m的混凝土梁,调节器
缩位移和长钢轨的伸缩位移,使桥上无缝线路自动放设置应根据计算确定。我国城市轨道交通调节器
散温度应力,从而减小轨道及桥梁所承受的无缝线路设置的主要目的:(1)避免无缝线路长钢轨纵向力向
附加力作用,确保列车安全、平顺地通过
道岔传递;(2)大跨度连续梁上发生钢軌折断时,减小
国外铁路为有效地控制特大桥梁附加力和位移的墩台所受断軌力1,以提高行车平顺性和确保安全。
影响,提高行车的平顺性和确保安全,要求在温度跨度2调节器设置方法
80m以上的混凝士桥和温度跨度120m以上的钢桥
上设置调节器。我国《铁路轨道设计规范》
日前,铁路桥上采用的调节器均为曲线型钢轨伸
缩调节器。曲线型是指基本轨由钢轨调节器导向卡
作者需介:丁静波(10979-),男,高级工程师,200年毕业于西南交通(轨撑)使其形成半径300m的曲线型基本轨并与尖
大学土本工程学院,工学学士,E-mail: dingjun@163、com
轨密贴,在钢轨纵向力传追时,由基本轨伸缩释放纵向