单轨交通轨道梁快速替换中的目标线形  

Objective alignment for rapid track beam replacement of straddle monorail transit

作　　者：钟明琳[1] 朱尔玉[1] 周勇政[1] 

机构地区：[1]北京交通大学土木建筑工程学院,北京100044

出　　处：《北京交通大学学报》2013年第1期90-94,共5页JOURNAL OF BEIJING JIAOTONG UNIVERSITY

基　　金：国家自然科学基金资助项目(50778022);高等学校博士学科点专项科研基金资助项目(20110009110016)

摘　　要：轨道梁是跨座式单轨交通的重要组成部分,要实现轨道梁在人为或自然条件下发生损毁时的快速替换,必须对轨道梁快速替换的目标线形进行研究,探求用有限类型的目标线形实现对任意线形轨道梁的快速替换.以重庆单轨交通轨道梁为研究对象,分析了轨道梁快速替换中目标线形分析的边界条件,提出了基于整体替换原理的轨道梁快速替换目标线形分析方法.通过对轨道梁平曲线目标线形分析得到由三种圆曲线(R=119、190、476 m)和直线组成的"三曲一直"轨道梁平曲线线形整体替换方案.分析表明,轨道梁线形替换中可以不考虑竖曲线的影响,目标线形能够实现对所有线形轨道梁的线形替换.Prestressed concrete（PC） track beam is the important part of straddle monorail transit.To achieve rapid replacement of PC track beam destroyed by man-made or natural disasters,research on the objective alignment for rapid replacement of track beam must be taken.PC track beam in Chongqing straddle monorail transit is selected as research object to analyze boundary conditions of objective alignment analysis during rapid replacement of PC track beam.The objective alignment analysis method is proposed based on the overall replacement principle.The overall alignment replacement program ＂Three Circular Curves＋Straight Line＂ comprised of three kinds of circular curves（R=119,190,476 m）and straight line is developed through the objective alignment analysis of plane curve of PC track beam.Analysis results of PC track beam vertical curve show that the vertical curve can be ignored during rapid replacement and the objective alignment can achieve alignment replacement of all types of PC track beam during rapid replacement.

关 键 词：跨座式单轨交通 轨道梁 快速替换 目标线形 

分 类 号：U232[交通运输工程—道路与铁道工程] U213.2