铁道科学与工程学报2018，Vol.15Issue(2)：319-327,9.
不同轴重重载列车作用下轮轨垂向力试验研究
Experimental research on wheel-rail vertical force under different axleload of heavy haul trains
摘要
Abstract
Based on the comprehensive experiment of 30t axle load trains of heavy haul railway, a lot of measured data of wheel-rail vertical force were obtained. The distribution characteristics and change law of wheel-rail vertical force under different axle loads of heavy haul trains were revealed by mathematical statistics. The probability density function of wheel-rail vertical force and two equations of the mean and standard deviation of wheel-rail vertical force with respect to axle load and speed were put forward. The results show that: The mean and the maximum of the wheel-rail vertical force increase linearly with the axle load, while the standard deviation decreases exponentially with the axle load; The mean of wheel-rail vertical force increases exponentially with the speed, while the maximum, standard deviation and coefficient of variation increase linearly with speed; The wheel-rail vertical force under different axle loads of heavy haul trains all obey the normal distribution; According to the equation of wheel-rail vertical force with respect to axle load and speed, the mean and standard deviation of wheel-rail vertical force can be predicted for different axle trains running at different speeds. The research results are of guiding significance for the structural design and maintenance of heavy haul railway engineering.关键词
重载铁路/列车轴重/轮轨垂向力/试验/数据分析Key words
heavy haul railway/train axle load/wheel-rail vertical force/experiment/data analysis分类
交通工程引用本文复制引用
吴斌,刘斌,曾志平,魏炜..不同轴重重载列车作用下轮轨垂向力试验研究[J].铁道科学与工程学报,2018,15(2):319-327,9.基金项目
中南大学研究生创新资助项目(2016zzts402) （2016zzts402）
国家自然科学基金资助项目(煤炭联合基金)(U1361204) （煤炭联合基金）
中铁十四局集团有限公司科技开发计划资助项目(20160016) （20160016）
国家科技支撑计划资助项目(2013BAG20BH00) （2013BAG20BH00）
