Parameters studies for rail wear in high-speed railway turnouts by unreplicated saturated factorial design

作     者：XU Jing-mang WANG Ping MA Xiao-chuan QIAN Yao CHEN Rong 徐井芒;王平;马晓川;钱瑶;陈嵘

作者机构：MOE Key Laboratory of High-speed Railway Engineering Southwest Jiaotong University Chengdu 610031 China School of Civil Engineering Southwest Jiaotong University Chengdu 610031 China 

出 版 物：《Journal of Central South University》 (中南大学学报（英文版）)

年 卷 期：2017年第24卷第4期

页      面：988-1001页

核心收录：

学科分类：08[工学] 0814[工学-土木工程] 082301[工学-道路与铁道工程] 0823[工学-交通运输工程] 

基　　金：Projects(51425804,51378439,51608459)supported by the National Natural Science Foundation of China Projects(U1334203,U1234201)supported by the Key Project of the China’s High-Speed Railway United Fund Project(2016M590898)supported by China Postdoctoral Science Foundation Project(2014GZ0009)supported by Sichuan Provinial Science and Technology support Program,China 

主　　题：high-speed railway turnouts rail wear unreplicated saturated factorial design wear simulation 

摘      要：Rail wear is one of the main reasons for reducing the service life of high-speed railway turnouts in China. The rail wear characteristics of high-speed railway turnouts are influenced by a large number of input parameters of the complex train-turnout system. To reproduce the actual operation conditions of railway turnouts, random distributions of these inputs need to be considered in rail wear simulation. For a given nominal layout of the high-speed railway turnout, 19 input parameters for rail wear simulation in high-speed railway turnouts are investigated based on orthogonal design of experiment. Three dynamic responses(wheel-rail friction work, normal contact force and size of contact patch) are defined as observed values and the significant factors(direction of passage, axle load, running speed, friction coefficient, and wheel and rail profiles) are determined by two unreplicated saturated factorial design methods, including the half-normal probability plot method and Dong 93 method. As part of the associated rail wear simulation, the influence of the wear models and the local elastic deformation on the rail wear was separately investigated. The calculation results for the wear models are quite different, especially for large creep mode. The local elastic deformation has a large effect on the sliding speed and rail wear and needs to be considered in the rail wear simulation.