基于导曲线空间线型优化的道岔钢轨特征断面磨耗分析
龙建兵1徐鸿2张斌3
Analysis of Turnout Rails Characteristic Section Wear Based on Spatial Alignments Optimization of Guide Curves
LONG Jianbing1XU Hong2ZHANG Bin3
-
作者信息:1.宁波市轨道交通集团有限公司， 315101， 宁波
2.中铁二院工程集团有限责任公司， 610031， 成都；
3.华东交通大学轨道交通基础设施性能监测与保障国家重点实验室， 330013， 南昌
-
Affiliation:1.Ningbo Rail Transit Group Co., Ltd., 315101, Ningbo, China
2.China Railway Eryuan Engineering Group Co., Ltd., 610031, Chengdu, China
3.State Key Laboratory of Performance Monitoring and Protecting of Rail Transit Infrastructure, East China Jiaotong University, 330013, Nanchang, China
-
关键词:
-
Key words:
-
DOI:10.16037/j.1007-869x.2025.04.035
-
中图分类号/CLCN:U213.4+2∶U213.6
-
栏目/Col:研究报告
摘要:
［目的］为了探究道岔导曲线空间线型的优化方法及优化之后的不同线型表现，以及不同线型对道岔岔区钢轨特征断面磨耗的影响，需对不同线型工况下道岔钢轨各特征断面的磨耗规律进行研究。［方法］提出了道岔平面线型的计算方法，在道岔导向曲线中设置超高，并将高阶曲线引入道岔线型设计和计算中；以我国42号高速道岔为例，设计计算了4条不同于现有线型的优化道岔线型；建立了车辆-道岔耦合动力学模型，结合轮轨接触有限元模型计算了道岔钢轨特征断面的磨耗深度；对不同线型工况下的道岔钢轨特征断面磨耗深度进行了对比分析。［结果及结论］在设置超高条件下，4种新线型的3个特征断面钢轨磨耗深度均小于既有线路；将前曲线由圆曲线改为缓和曲线后，该区段的钢轨特征断面磨耗深度也大大减小；高阶曲线在道岔导曲线位置的应用，也有利于减少所选取导曲线钢轨特征断面的磨耗。
Abstracts:
［Objective］ In order to explore the optimization method of the spatial alignment for the turnout guide curve and the performance of different alignments after optimization, as well as the influence of different alignments on the rail wear characteristic section in the turnout area, it is necessary to study the wear laws of each characteristic section of the turnout rail under different alignment conditions.［Method］ A calculation method for the turnout plane alignment is proposed. Superelevation is set in the turnout guide curve, and high-order curves are introduced into the design and calculation of turnout alignment. Taking No.42 high-speed turnout in China as an example, four optimized turnout alignments different from the existing ones are designed and calculated; a vehicle-turnout coupling dynamic model is established, and the wear depth of the characteristic sections of the turnout rail is calculated in combination with the wheel-rail contact finite element model. A comparative analysis is made on the wear depth of the characteristic sections of the turnout rail under different line shape conditions.［Result & Conclusion］ Under the condition of setting superelevation, wear depths at three characteristic sections of the four new alignments are all smaller than that of the existing ones; after changing the lead curve from a circular curve to a transition one, wear depths of the rail characteristic section in this guide curve are also greatly reduced; the application of high-order curves at the position of the turnout guide curve is also conducive to reducing the wear of the characteristic section in the selected guide curve rail.
- 上一篇: 高铁物流运输模式及其可行性
- 下一篇: 活动支座摩擦阻力对地铁连续梁桥上无缝线路的影响
过刊浏览
资料下载
友情链接