铁道轮轨黏着系数  

Railway Wheel-Rail Adhesion Coefficient

作　　者：黄问盈[1] 

机构地区：[1]中国铁道科学研究院机车车辆研究所,北京100081

出　　处：《铁道机车车辆》2010年第5期17-25,33,共10页Railway Locomotive & Car

摘　　要：铁道轮轨黏着限制对铁道列车安全运行至关重要,尤其现代高速列车速度已达350—360 km/h,并有向400 km/h甚或以上推进的趋势,所以高速轮轨黏着条件能否支持高速牵引力与制动力就是一个现实课题。时至今日,尚无法用理论方法推算轮轨黏着系数公式格式和数值范围,只能用纯经验方法处理。本文推荐常规列车中不同型式机车(牵引)计算黏着系数的实用公式,并提供3种核算利用黏着系数的方法,基于核算、分析与讨论若干类别的高速列车利用的黏着系数范围与少数既有的高速黏着系数公式之间的位置与关系,最终推荐中国湿轨黏着系数的实用公式(μ_j=0.04+13.7/120+v),作为高速列车(牵引与制动)统一的计算黏着系数公式以及常规列车的(制动)计算黏着系数公式。The limit of railway wheel-rail adhesion is highly important to safely operation of railway trian.Especially the top operative speed of modern high speed train has been reached 350—360 km/h,and the development trend may be set to 400 km/h or over,so whether or not enable the condition of high speed wheel-rail adhesion to support high speed tractive effort and braking force is a practical problem.To this day,the formula form and value range of railway wheel-rail adhesion coefficient cannot be deduced and calculated by theoretical method,but only pure experimental method can be used.In this paper,the practical wheel -rail traction adhesion coefficient formulas are suggested for different kinds of locomotive of traditional train and three calculated methods of exploited adhesion coefficient are made.Based on calculation,analysis and discussion of the position and relation between exploited adhesion coefficient of many group of high speed train and few existing formulas of high speed adhesion coefficient,the practical railway wheel-rail adhesion coefficient for-mula of Chinese wet rail（u_j =0.04＋13.7/120＋v ） is suggested for use of both the unitary computational adhesion coefficient formula（traction and braking） of high speed train and computational braking adhesion coefficient formula of traditional train.

关 键 词：铁道轮轨黏着系数 常规列车 高速列车 计算黏着系数 利用的黏着系数 牵引 制动 

分 类 号：U260.115[机械工程—车辆工程]