车轮多边形激扰下轨道几何检测数据偏差规律及限值研究

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振动与冲击 ›› 2023, Vol. 42 ›› Issue (7) : 207-216.

论文

魏子龙1，孙宪夫1，杨飞1，杨国涛2，罗国伟3，尤明熙1

作者信息 +

Deviation laws and limit value of track geometry detection data under excitation of wheel polygon

WEI Zilong1, SUN Xianfu1, YANG Fei1, YANG Guotao2, LUO Guowei3, YOU Mingxi1

Author information +

文章历史 +

摘要

某高速综合检测列车出现因车轮失圆引起的轨道几何检测数据偏差问题，对科学评价轨道平顺状态造成不利影响。为此，在深入分析检测数据异常特征的基础上，建立车轮多边形激扰下的车辆-轨道耦合动力学模型，获取车轮多边形的阶数、幅值等参数对轨道检测数据偏差的影响规律，并提出适用于高速综合检测列车的车轮低阶多边形限值。结果表明，低阶车轮多边形是引起轨道几何检测数据偏差的重要激扰源，会对轨道高低、水平与扭曲不平顺的检测造成干扰，而轨向与轨距不平顺检测所受的影响很小；车轮镟修与磨耗引起的轮径变化对轨道几何检测精度的影响较小，高速综合检测列车车轮的最小允许轮径可与普通运营动车组保持一致；轨道检测系统所在轮对的车轮多边形径跳值不应超过0.10 mm。

Abstract

The wheel polygons of high-speed comprehensive inspection train induce undesired deviations of track irregularity inspection data, which imposes an adverse effect on evaluating the status of track geometry. Focusing on the issue, this study initially investigates the anomaly feature of track inspection data in both time and frequency domains, and then establishes the model capable of simulating the dynamic vehicle-track interaction induced by wheel polygons and the multi-criteria evaluation approach of wheel polygons. The influence of the order, depth of wheel polygons as well as the wheel radius on the deviation of track inspection data is extracted, and the limit of wheel polygons for high-speed comprehensive inspection train is proposed. The results indicate that the low order of wheel polygons plays an important role in the reliability of inspection data, especially for the items of longitudinal level, cross-level, and twist, whereas both track alignment and track gauge are rarely affected. The change in the wheel radius caused by tread wear and reprofiling does not influence much on the accuracy of measured data, so that the minimum wheel radius allowed for high-speed comprehensive inspection train can be similar with the ordinary operating EMUs. The limit of wheel polygons instrumented by the track irregularity inspection device should be set to 0.10 mm.

导出引用

魏子龙1，孙宪夫1，杨飞1，杨国涛2，罗国伟3，尤明熙1. 车轮多边形激扰下轨道几何检测数据偏差规律及限值研究[J]. 振动与冲击, 2023, 42(7): 207-216

WEI Zilong1, SUN Xianfu1, YANG Fei1, YANG Guotao2, LUO Guowei3, YOU Mingxi1. Deviation laws and limit value of track geometry detection data under excitation of wheel polygon[J]. Journal of Vibration and Shock, 2023, 42(7): 207-216

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