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On-line Access: 2025-01-21
Received: 2023-12-01
Revision Accepted: 2024-03-15
Crosschecked: 2025-01-21
Cited: 0
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Citations: Bibtex RefMan EndNote GB/T7714
Yanlin HU, Xin GE, Liang LING, Chao CHANG, Kaiyun WANG. Dynamic performance of a high-speed train exiting a tunnel under crosswinds[J]. Journal of Zhejiang University Science A,in press.Frontiers of Information Technology & Electronic Engineering,in press.https://doi.org/10.1631/jzus.A2300610 @article{title="Dynamic performance of a high-speed train exiting a tunnel under crosswinds", %0 Journal Article TY - JOUR
高速列车横风下驶出隧道的动力学性能研究机构:1西南交通大学,轨道交通运载系统全国重点实验室,中国成都,610031;2中车青岛四方机车车辆股份有限公司,中国青岛,266000 目的:高速列车在强风环境驶出隧道会受到突变气动载荷影响。本文旨在探讨风速和风向对车辆气动特性和动力学性能的影响,研究横风和隧道综合影响下车辆运行的安全性,以期为工程实践提供参考。 创新点:1.探究了风向对车辆驶出双线隧道时的气动特性和动力学响应的影响规律;2.通过列车-轨道耦合动力学模型确定了影响行车安全的风速限值。 方法:1.采用已验证的建模方法建立高速列车驶出隧道的气动特性分析模型,并计算列车驶出隧道过程中作用于车身的时变气动载荷;2.根据车辆实际动力学参数建立列车-轨道耦合动力学模型,并分析时变载荷影响下车辆的动力学响应特征;3.统计与分析不同风速和风向条件下车辆的轮轨安全性指标来确定影响行车安全的风速阈值。 结论:1.作用于头车的气动载荷冲击最大,且与风速呈较明显的正相关关系;2.双线隧道近墙侧来风可引起更大幅度的瞬态气动载荷变化,所以对行车安全影响更大;3.突变气动载荷可引起车身0.5~3.0 Hz的低频晃动,且风速超过20 m/s将使头车运行的安全性迅速恶化。 关键词组: Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article
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