有砟轨道捣固作业起道方案的综合修正方法

张雨潇; 时瑾; 倪国华; 王英杰

doi:10.3969/j.issn.0258-2724.20220526

有砟轨道捣固作业起道方案的综合修正方法

doi: 10.3969/j.issn.0258-2724.20220526

1.
北京交通大学土木建筑工程学院，北京 100044
2.
中国铁路兰州局集团有限公司银川工务段，宁夏银川 750000

基金项目: 国家自然科学基金（52078035, 52178406）

详细信息

作者简介:
张雨潇（1996—），男，博士研究生，研究方向为轨道平顺性控制，E-mail：21115059@bjtu.edu.cn

通讯作者:
时瑾（1980—），男，教授，研究方向为铁路线路工程技术，E-mail：jshi@bjtu.edu.cn

中图分类号: U216.42
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- 被引次数: 0
出版历程
- 收稿日期: 2022-07-30
- 修回日期: 2022-11-28
- 网络出版日期: 2023-07-06
- 刊出日期: 2022-12-01

Comprehensive Correction Method of Lifting Scheme for Tamping Operation of Ballasted Track

1.
School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China
2.
Yinchuan Track Maintenance Division, China Railway Lanzhou Group Co., Ltd., Yinchuan 750000, China

摘要

摘要:
为保证捣固作业效果达到预期目标，需严格控制影响作业质量的不利因素，首先，以有砟轨道捣固作业数据为研究对象，分析影响作业质量的关键因素，探讨传统方法修正起道方案的基本原理；其次，将多因素约束条件纳入目标线形构造过程，并遵从历史作业规律，对起道量进行修正，构造一种用于提升轨道高低调整效果的起道方案综合修正方法；最后，以某高速铁路有砟轨道捣固作业为工程背景，验证综合修正方法的实施效果. 研究结果表明：在起道方案制定过程中施加针对性控制措施，有利于提高捣固作业对轨道不平顺的调整能力；捣固后，线形实测值与目标值之间决定系数高达0.92；方案起道量与实际起道量之间均方误差为1.8 mm；高低60 m中点弦测值降至4.0 mm，高低轨道质量指数降至0.28 mm.
- 捣固作业 /
- 起道量 /
- 有砟轨道 /
- 轨道不平顺 /
- 支持向量回归
Abstract:
In order to make the effect of tamping operation meet the expected goals, it is necessary to strictly control the unfavorable factors affecting the quality of the operation. Firstly, by taking the tamping operation data of ballasted track as the research object, the key factors affecting the operation quality were analyzed firstly, and the basic principles of the traditional methods to correct the lifting scheme were discussed. Secondly, by incorporating the multi-factor constraints into the target line construction process and correcting the lifting value according to the historical operation law, a comprehensive correction method of the lifting scheme for improving the adjustment effect of track height was constructed. Finally, by taking the ballasted track tamping operation of a high-speed railway as the engineering background, the implementation effect of the comprehensive correction method was verified. The results show that the application of targeted control measures in the process of lifting scheme formulation can improve the ability of the tamping operation to adjust the track irregularity. The coefficient of determination between the measured value and the target value of the alignment after tamping is as high as 0.92, and the mean square error between the planned lifting value and the actual lifting value is only 1.8 mm. The mid-chord value of 60 m is reduced to 4.0 mm, and the track quality index is reduced to 0.28 mm.
- tamping operation /
- lifting value /
- ballasted track /
- track irregularity /
- support vector regression (SVR)

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图 1 纵向抄平作业原理

Figure 1. Principle of longitudinal leveling operation

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图 2 方案起道量与实际起道量

Figure 2. Planned and actual lifting values

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图 3 高低不平顺理想值与实际值

Figure 3. Ideal and actual values of track irregularity

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图 4 不同目标线形的捣固作业

Figure 4. Tamping operations with different target lines

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图 5 起、拨道方案

Figure 5. Schemes of lifting and lining

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图 6 捣固车重复性作业精度

Figure 6. Repetitive operation accuracy of tamping wagon

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图 7 不同捣固车作业精度

Figure 7. Operation accuracy of different tamping wagons

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图 8 起道量分布趋势

Figure 8. Distribution trend of lifting value

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图 9 目标线形修正示意

Figure 9. Target line correction

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图 10 目标线形构造及修正结果

Figure 10. Construction and correction of target line

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图 11 适应度曲线

Figure 11. Fit curve

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图 12 测试集数据预测效果

Figure 12. Prediction effect of test set data

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图 13 方案起道量修正结果

Figure 13. Correction results of planned lifting value

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图 14 捣固作业整体效果

Figure 14. Overall effect of tamping operation

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图 15 行车安全性和舒适性指标

Figure 15. Running safety and comfortability index

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图 16 轨道平顺性状态

Figure 16. Track regularity state

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表 1 高低不平顺改善效果

Table 1. Improvement effect of track irregularity

线路	60 m 中点弦测值/mm		改善率/%		方案起道量均值/ mm
线路	捣固前	捣固后	高低不平顺	TQI	方案起道量均值/ mm
线路 1	8.00	6.50	18.75	20.38	6.50
线路 2	18.00	12.30	31.67	37.50	14.36

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表 2 建模典型数据

Table 2. Typical data for modeling

实际起道量/mm	高低 60 m 中点弦测值/mm	捣固车编号	方案起道量/mm
10.00	5.00	1	16.00
8.00	4.25	3	14.00
10.00	5.50	2	16.00
9.00	4.75	3	15.00
$\vdots $	$\vdots $	$\vdots $	$\vdots $
9.00	5.50	1	16.00

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