400km/h及以上速度下列车通过隧道时列车表面压力特征研究
户迎灿1杜健1蔡军爽1胡冲2陆意斌2
Research on the Train Surface Pressure Characteristics in Passing through Tunnels at Speeds of 400 km/h and above
HU Yingcan1DU Jian1CAI Junshuang1HU Chong2LU Yibin2
-
作者信息:1.中车青岛四方机车车辆股份有限公司，266111，青岛
2.中南大学交通运输工程学院轨道交通安全教育部重点实验室，410075，长沙
-
Affiliation:1.CRRC Qingdao Sifang Co., Ltd., 266111, Qingdao, China
2.Key Laboratory of Traffic Safety on Track of Ministry of Education, School of Traffic & Transportation Engineering, Central South University, 410075, Changsha, China
-
关键词:
-
Key words:
-
DOI:10.16037/j.1007-869x.2025.01.021
-
中图分类号/CLCN:U451+.3
-
栏目/Col:研究报告
摘要:
［目的］为了保障400km/h及以上速度列车穿越隧道时的行车安全,提升乘客舒适性，需采用数值模拟方法，对列车通过隧道时的列车表面压力特征进行研究。［方法］介绍了一维流动理论和广义黎曼变量特征线法，通过动模型试验对其进行了验证。探究了不同列车运行速度、不同隧道长度对8辆编组列车通过隧道时的列车表面压力影响规律，并分析了不同列车表面压力的分布特征。［结果及结论］当列车运行速度为400km/h，隧道长度为0.7km时，列车表面的最大正压值、最大压力幅值、最大负压值均达到峰值；当隧道长度超过0.7km后，最大正压值基本不随隧道长度的增加而变化，最大负压值和最大压力幅值均随着隧道长度的增大而逐渐减小。在不同列车运行速度下，列车表压力值均随列车运行速度的增加而逐渐增加。列车运行速度为400km/h时的同一列车不同部位表面的最大正压值和最大压力幅值均表现为头车＞中间车＞尾车，最大负压值则表现为头车＜中间车＜尾车。列车表面最大正压值、最大负压值和最大压力幅值在数值上均表现为随着测点距车头鼻尖的距离的增大而逐渐减小。
Abstracts:
［Objective］ In order to ensure the running safety of trains with a speed of 400 km/h and above when passing through tunnels and improve the passenger ride comfort, it is necessary to adopt the numerical simulation method to study the characteristics of the pressure on the train body surface when passing through tunnels. ［Method］ The one-dimensional flow theory and the method of characteristic lines of generalized Riemann variables are introduced and verified through dynamic model tests. The influence patterns of different train running speeds and different tunnel lengths on the train body surface pressure when an 8-car marshalling train passes through the tunnel are explored, and the distribution characteristics of surface pressure on different vehicle bodies are analyzed. ［Result & Conclusion］ When the train running speed is 400 km/h and the tunnel length is 0.7 km, the maximum positive pressure value, the maximum pressure amplitude, and the maximum negative pressure value on the train surface all reach their peak values. When the tunnel length exceeds 0.7 km, the maximum positive pressure value basically does not change with the increase of tunnel length, while the maximum negative pressure value and the maximum pressure amplitude gradually decrease as the tunnel length increases. With different train running speeds, the pressure values on the train surface gradually increase with the increase of train running speed. For the same train running at a speed of 400 km/h, the different parts of the train in descending order of the maximum positive pressure value and the maximum pressure amplitude on their surfaces are the head car, the intermediate car, and the end car, while in ascending order of the maximum negative pressure are the head car, the intermediate car, the end car. Numerically, the maximum positive pressure value, the maximum negative pressure value, and the pressure amplitude on the train body surface all gradually decrease as the distance of the measuring points from the nose tip of the train head increases.
- 上一篇: 高铁物流运输模式及其可行性
- 下一篇: 超导电动磁浮技术完善交通系统产业链
过刊浏览
资料下载
友情链接