基于 Archard磨耗模型并结合有限元静动力分析方法，对重载铁路合金钢心轨组合辙叉道岔岔区钢轨垂直磨耗特性进行了研究，给出了一种研究钢轨磨耗的新方法。研究结果表明：受不同断面轮轨接触特性及轮轨力差异的影响，岔区各断面轮轨接触斑内磨耗量的大小及分布存在差异；辙叉轮载过渡区翼轨磨耗严重的机理是轮轨法向接触应力大于翼轨材料硬度的0.8倍导致了磨耗系数的突变，建议将此区域翼轨镶嵌合金钢材料或采用深度爆炸硬化技术处理；轮轨接触应力随行车速度的增加有所增加，随列车轴重的增加而大幅增加，建议有条件的情况下降低 C80，C70列车的侧向过岔速度，以减缓道岔的磨耗速率。%Based on Archard wear model and static and dynamic finite element analysis method,the vertical turnout rail wear characteristics of assembled frog with alloy steel point rail in heavy haul railway was studied and a new method for rail wear research was introduced. T he results showed that the wear amount and distribution of each section in turnout w heel-rail interaction zone are different due to the variance of w heel-rail contact characteristics and wheel-rail interaction force,the mechanism of wing rail severe wear in frog wheel load transition region is that the wheel-rail contact stress is greater than 0. 8 times the wing rail material hardness causing mutation of wear coefficient,which could be avoided by setting alloy steel material for wing rail and using the deep explosion hardening technology in this region,w heel-rail contact stress increases w ith the increasing of vehicle axle load and vehicle velocity,which means lowing the lateral speed of passing railroad switch for C80 and C70 trains in order to reduce the turnout w ear rate.
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