山东理工大学学报（自然科学版）2025，Vol.39Issue(3)：33-37,78,6.
钢轨焊缝处轮轨力特性宏微观分析
Macro and micro analysis of wheel and rail force characteristics at rail welds
摘要
Abstract
Rail weld is one of the most complex structures in railway lines,and the wheel-rail force char-acteristics at the weld are significantly different from those in other areas.Based on wheel-rail force moni-toring data at the rail weld of a high-speed passenger line,this study analyzes the wheel-rail force charac-teristics of different train speeds and carriage positions.The nonlinear chaos theory is introduced to carry out microscopic analysis of the wheel-rail force at the rail weld,enabling the multi-level analysis of the wheel-rail force characteristics.The results show that the changes in the flatness of the running surface and the guiding surface at the rail weld are 0.174 mm and 0.370 mm,respectively.Under this line con-dition,there are differences in the wheel-rail force characteristics of different passage speeds,and the most unfavorable train speed at the rail weld is 200～220 km/h.There are also differences of the wheel-rail force characteristics in different carriage positions,and the wheel weight reduction rate of the front and rear carriages is 1.261 times greater than that of other carriages.Furthermore,the correlation dimen-sion is introduced for microscopic analysis of the wheel-rail force at the welds under various operating con-ditions,validating the macroscopic wheel-rail force characteristics.The wheel-rail force characteristics at the rail weld are comprehensively evaluated from macro and micro aspects.关键词
高速铁路/钢轨焊缝/轮轨力/安全特性/宏微观分析Key words
high-speed railway/rail weld/wheel-rail force/safety features/macro and micro analysis分类
交通工程引用本文复制引用
万齐行,何越磊,路宏遥..钢轨焊缝处轮轨力特性宏微观分析[J].山东理工大学学报（自然科学版）,2025,39(3):33-37,78,6.基金项目
国家自然科学基金项目(51978393) （51978393）
中国铁路上海局集团有限公司科研计划项目(2023042) （2023042）
