既有万吨重载铁路提速条件下轮轨动态相互作用特性  

Wheel-Rail Dynamic Interaction Characteristics Under Condition of Speed Increase for Heavy Haul Railway with 10 000 t Trains

作　　者：康喆 王开云[1] 陈是扦 KANG Zhe;WANG Kaiyun;CHEN Shiqian(State Key Laboratory of Traction Power,Southwest Jiaotong University,Chengdu 610031,China)

机构地区：[1]西南交通大学牵引动力国家重点实验室,成都610031

出　　处：《铁道建筑》2022年第8期63-67,共5页Railway Engineering

基　　金：国家杰出青年科学基金(51825504);国家能源投资集团有限责任公司科技创新项目(GJNY-20-231);四川省应用基础研究项目(2020YJ0213)。

摘　　要：为研究我国某万吨重载铁路既有线提速的可行性,开展列车通过不同线路条件时轮轨动态相互作用特性的仿真和试验研究。建立万吨重载货车在线路上运行的动力学分析模型,计算分析其空载、满载以及直线、曲线通过等多种工况下,不同运行速度对轮轨动态相互作用的影响;对万吨重载列车开展了提速动力学试验,测试重载列车提速通过时的轮轨动态相互作用特性。结果表明:万吨重载列车的轮轨动态相互作用均随车辆运行速度的增加而增大,曲线线路区段产生的轮轨相互作用更加剧烈,但均小于安全标准限值且有一定的安全余量。In order to study the feasibility of speed increasing for a heavy haul railway with 10 000 t trains in China,the simulation and experimental study on the dynamic interaction characteristics of wheel-rail were carried out when the train passes through different line conditions. The dynamic analysis model of 10 000 t heavy haul freight train running on the line was established,and the influence of different running speeds on the wheel-rail dynamic interaction under various working conditions such as no-load,full load,straight line and curve passing was calculated and analyzed. The speed-up dynamic test was carried out on the 10 000 t heavy haul train to test the dynamic interaction characteristics of wheel-rail when the heavy haul train passes through at an increasing speed. The results show that the wheel-rail dynamic interaction of the 10 000 t heavy haul train increases with the increase of the vehicle running speed,and the wheel-rail interaction in the curve line section is more intense,but both are less than the safety standard limit and have a certain safety margin.

关 键 词：重载铁路 万吨重载列车 仿真计算 试验研究 提速 轮轨相互作用 

分 类 号：U211.5[交通运输工程—道路与铁道工程]