Dynamic characteristics of vehicles interaction on single-level rail-cum-road bridge

• Published in: Earthquake Engineering and Engineering Vibration Vol. 24; no. 2; pp. 473 - 491
• Main Authors: Huang, Jiacong, Zhu, Jie, Yin, Yanqiong, He, Jiajun, Xu, Xinyu
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.04.2025; Springer Nature B.V
• Subjects: Aerodynamics; Bridge decks; Bridges; Civil Engineering; Computational fluid dynamics; Control; Distance; Dynamic characteristics; Dynamic response; Dynamical Systems; Earth and Environmental Science; Earth Sciences; Fluid dynamics; Geotechnical Engineering & Applied Earth Sciences; Hydrodynamics; Roads & highways; Trains; Vibration; Yaw; Yawing; aerodynamic impact; dynamic response; vehicle-bridge coupled vibration; single-level rail-cum-road bridge
• ISSN: 1671-3664; 1993-503X
• DOI: 10.1007/s11803-025-2306-8

Aerodynamic and dynamic interference between the railway and highway are two major issues that influence travel safety on single-level rail-cum-road bridges. Based on a computational fluid dynamics simulation and vehicle-bridge coupled vibration system, this research explores the dynamic response of a moving van encountering travelling trains on a typical single-level rail-cum-road bridge. The relationship between the line distance of the railway and highway and the dynamic response of the van is discussed. The study reveals that the vertical response of the van is primarily governed by the coupled vibration of the vehicle-bridge system and road roughness, with minimal impact from the line distance. The aerodynamic impact of the train-induced wind significantly influences the lateral, yawing and rolling responses, and the line distance also affects the vehicle’s behavior, with decreasing distance leading to increased response. Among them, the yawing vibration is the most influential. The relationship between the maximum dynamic response and line distance is quantitatively analyzed using the proposed fitting formulas, which perform well on the lateral, rolling and yawing response and shows higher accuracy for acceleration compared to velocity and displacement. Relevant results could provide help on optimizing the arrangement of bridge deck.