我国高速铁路道岔尖轨廓形研究  

Switch Rail Profiles of HSR in China

作　　者：王树国[1,2] 司道林[1,2] 杨东升 钱坤[1,2] 

机构地区：[1]中国铁道科学研究院铁道建筑研究所,北京100081 [2]中国铁道科学研究院高速铁路轨道技术国家重点实验室,北京100081

出　　处：《中国铁路》2018年第1期15-19,共5页China Railway

基　　金：中国铁路总公司科技研究开发计划项目(2017G003-A)

摘　　要：对我国高速铁路道岔区钢轨运营现状进行总结分析,得出2种道岔区典型尖轨廓形。建立轮轨接触和动力学模型,分析尖轨廓形对应力分布特征和动力学性能的影响规律。分析结果表明:尖轨轨肩较低时将导致接触区域集中分布于非工作边侧,形成较高的应力水平,大幅增加产生接触伤损的风险,而采用设计廓形的尖轨应力水平较低,接触区域分布合理。尖轨廓形对道岔区动力学性能的影响较小,道岔区基本轨采用60N廓形可在一定程度上改善道岔区动力学性能。建议高速铁路道岔区尖轨、心轨机加工段廓形仍沿用现有尺寸参数,轨件非加工段采用60N廓形。The paper looks at the operation status of rails in HSR turnout areas in China, and presents two typical switch rail profiles. It puts forward wheel-rail interaction and dynamics models and looks into the influence of switch rail profiles on stress distribution and dynamics. Tile study shows that when the rail shoulder of the switch rail is low, the contact area will be concentrated on the non-working side, tbrming a higher stress level, greatly increasing the risk of contact damage, the stress level of the designed profile is lower and the distribution is reasonable. Also, the influence of switch rail profile on the dynamic performance of turnout area is small, and the use of 60N profile for stock rail in tile turnout area can improve the dynamic performance of turnout area to a certain extent. It is recommended that the existing size parameters shall be used for profiles of switch rail and point rail in machining process sections in high-speed railway turnout areas, and the 60N profile shall be used in rail non-processing sections

关 键 词：高速道岔 尖轨 廓形 动力学 

分 类 号：U213.6[交通运输工程—道路与铁道工程]