重型轨道交通车辆碰撞的数值模拟及碰撞力特性分析

IF 0.7 Q4 ENGINEERING, MECHANICAL Journal of Vibroengineering Pub Date : 2023-01-11 DOI:10.21595/jve.2022.22942
Wen Zhang, Chun Li
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引用次数: 0

摘要

重型轨道交通车辆撞击桥墩的碰撞力受多种因素的影响。为了研究重型轨道交通车辆撞击桥梁时的碰撞力特性,采用有限元软件LS-DYNA对重型轨道交通汽车撞击桥梁进行了模拟。重型轨道交通车辆的车速、桥墩混凝土强度、桥墩箍筋间距、桥墩箍筋配筋率以及车辆与桥墩的偏心距离对碰撞力特性的影响。仿真分析结果表明,桥墩和重型轨道交通车辆撞击点周围的总变形频率随着距离撞击点距离的增加而减小,撞击点附近的变形频率最大。重型轨道交通车辆的速度、桥墩的混凝土强度、桥墩箍筋的配筋率、车辆与桥墩的偏心距离越大、箍筋间距越小,说明重型轨道交通车撞击桥墩时的碰撞力越大。
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Numerical simulation of heavy rail transit vehicle collision and analysis of collision force characteristics
The collision force of a heavy rail transit vehicle hitting a bridge pier is affected by many factors. In order to investigate the characteristics of the collision force when a heavy rail transit vehicle hits a bridge, the finite element software LS-DYNA is used to simulate the impact of a heavy rail transit vehicle on a bridge. The influence of the vehicle speed of heavy rail transit vehicles, the strength of bridge pier concrete, the spacing of pier stirrups, the ratio of pier stirrup reinforcement, and the eccentric distance between the vehicle and the bridge pier on the characteristics of the collision force. The simulation analysis results show that the total deformation frequency around the impact point of the bridge pier and the heavy rail transit vehicle decreases as the distance from the impact point increases, and the deformation frequency in the vicinity of the impact point is the largest. The speed of the heavy rail transit vehicle, the concrete strength of the bridge pier, the reinforcement ratio of the pier stirrup, the larger the eccentric distance between the vehicle and the bridge pier, and the smaller the spacing between the stirrups, the greater the collision force when the heavy rail transit vehicle hits the bridge pier.
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来源期刊
Journal of Vibroengineering
Journal of Vibroengineering 工程技术-工程:机械
CiteScore
1.70
自引率
0.00%
发文量
97
审稿时长
4.5 months
期刊介绍: Journal of VIBROENGINEERING (JVE) ISSN 1392-8716 is a prestigious peer reviewed International Journal specializing in theoretical and practical aspects of Vibration Engineering. It is indexed in ESCI and other major databases. Published every 1.5 months (8 times yearly), the journal attracts attention from the International Engineering Community.
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