道岔尖轨磨耗对列车运行安全的影响  

Inf luence of Switch Rail Wear in Turnout on Train Running Safety

作　　者：张文仁 

机构地区：[1]广州铁路(集团)公司工务处,广东广州510088

出　　处：《铁道建筑》2016年第11期117-119,136,共4页Railway Engineering

基　　金：中国铁路总公司科技研究开发计划(Z2015-G002)

摘　　要：道岔作为线路结构的薄弱环节,其钢轨磨耗直接影响道岔使用寿命以及列车的运行安全。本文基于UM动力学软件,应用车辆-道岔系统耦合动力学分析客运专线18号无砟轨道道岔曲尖轨侧面磨耗在不同阶段对列车运行安全的影响。计算结果表明:随着曲尖轨侧面磨耗量增大,转辙区轮轨相互作用力、脱轨系数及轮重减载率均增大,曲尖轨磨耗量达到4.19 mm时,轮轨作用力及安全系数未超过安全限值。As a weak link of the railway line structure,the rail wear of turnout directly affects the turnout service life and train operation safety.Based on dynamics software UM（Universal Mechanism）,the influence of side wear of No.18 ballastless track turnout switch rail in the passenger dedicated line at different stages on train operation safety was analyzed by using vehicle-turnout system coupling dynamics.The results show that wheel rail interaction force in switch area derailment coefficient and the rate of wheel load reduction increase with the side wear of switch rail increasing,the wheel rail force and safety factor don＇t exceed the safety limits when the side wear capacity of switch rail is 4.19 mm.

关 键 词：道岔 尖轨侧面磨耗 脱轨系数 车辆-道岔耦合动力学 

分 类 号：U213.6[交通运输工程—道路与铁道工程]