岔区轨件打磨对高速列车动力特性影响分析

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摘要针对福州工务段在杭深客运专线部分岔区采用的轨件打磨方案，在实测岔区轨件打磨前、后关键断面廓形的基础上，基于车辆-道岔动态相互作用，建立了车辆-道岔仿真模型，以列车250km/h速度直逆向过岔为例，对打磨前、后两种工况的动力响应特征进行了深入对比分析。结果表明：轨件打磨作业后，列车第一轮对右侧脱轨系数幅值降低27.7%、横向轮轨力幅值降低27.4%，车体横向振动加速度和横移量幅值分别降低了56.8%和47.7%，列车过岔安全性及动力特性得到了明显改善；工务段晃车仪、添乘仪以及动检车的检测结果显示，岔区轨件打磨作业后，线路设备质量得到了显著提升，列车过岔时的车体横向加速度明显降低；本次岔区轨件打磨经验表明，钢轨打磨是改善岔区轮轨接触关系、提升动车组运行品质的有效手段；理论研究成果验证了福州工务段为解决管内岔区“晃车”问题所采用的轨件打磨方案的合理性，为高速铁路岔区轨件廓形优化打磨提供了理论支持。

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	张鹏飞1
	朱旭东1
	雷晓燕1
	肖剑2

关键词 ：高速道岔, 打磨方案, 钢轨打磨, 动力特性

Abstract：Aiming at the innovative rail grinding scheme of Fuzhou Engineering Section used in the turnout area of hangzhou-shenzhen passenger dedicated line. A simulation model of vehicle-turnout was established with the theory of vehicle-turnout dynamic interaction on the basis of measuring the profile of the key section before and after grinded in the turnout area, and the dynamic response characteristics of the two working conditions before and after grinded were compared and analyzed in the case of the train passes through the turnout in a straight direction at a speed of 250km/h. It was shown that the derailment coefficient and the lateral wheel-rail force amplitude of the right wheel in the first round reduced by 27.7% and 27.4%, respectively; the amplitude of lateral vibration acceleration and transverse movement of the vehicle body decreased by 56.8% and 47.7% , respectively. the dynamic characteristics of the train passing through the turnouts have been improved obviously after rail grinded. The detection results of vehicle wobble meter and moving inspection vehicle displayed that after rail grinded, the quality of line equipment is significantly improved, and the lateral acceleration of the train body is obviously reduced; The experience of rail grinding shows that rail grinding is an effective means to improve the contact relationship of wheel-rail and improve the operation quality of emu in switch; The theoretical research results verifies the rationality of the rail grinded scheme that adopted by Fuzhou Engineering Section in the turnout area, and provides some theoretical support for the optimization and grinding of rail profile in the turnout area of high-speed railway.

Key words： High speed turnout Grinding scheme Rail grinded Dynamic characterist

收稿日期: 2019-04-29 出版日期: 2020-09-15

引用本文:

张鹏飞1，朱旭东1，雷晓燕1，肖剑2. 岔区轨件打磨对高速列车动力特性影响分析[J]. 振动与冲击, 2020, 39(18): 223-230.
ZHANG Pengfei1,ZHU Xudong1,LEI Xiaoyan1,XIAO Jian2. Influence of turnout rail profile grinding on the dynamic characteristics of high speed trains. JOURNAL OF VIBRATION AND SHOCK, 2020, 39(18): 223-230.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2020/V39/I18/223

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