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Int. J. Environ. Res. Public Health 2016, 13(11), 1121; doi:10.3390/ijerph13111121

A Case Study of Dynamic Response Analysis and Safety Assessment for a Suspended Monorail System

Department of Bridge Engineering, Southwest Jiaotong University, Chengdu 610031, Sichuan, China
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Author to whom correspondence should be addressed.
Academic Editors: Suren Chen and Feng Chen
Received: 31 August 2016 / Revised: 3 November 2016 / Accepted: 7 November 2016 / Published: 10 November 2016
(This article belongs to the Special Issue Traffic Safety and Injury Prevention)
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Abstract

A suspended monorail transit system is a category of urban rail transit, which is effective in alleviating traffic pressure and injury prevention. Meanwhile, with the advantages of low cost and short construction time, suspended monorail transit systems show vast potential for future development. However, the suspended monorail has not been systematically studied in China, and there is a lack of relevant knowledge and analytical methods. To ensure the health and reliability of a suspended monorail transit system, the driving safety of vehicles and structure dynamic behaviors when vehicles are running on the bridge should be analyzed and evaluated. Based on the method of vehicle-bridge coupling vibration theory, the finite element method (FEM) software ANSYS and multi-body dynamics software SIMPACK are adopted respectively to establish the finite element model for bridge and the multi-body vehicle. A co-simulation method is employed to investigate the vehicle-bridge coupling vibration for the transit system. The traffic operation factors, including train formation, track irregularity and tire stiffness, are incorporated into the models separately to analyze the bridge and vehicle responses. The results show that the coupling of dynamic effects of the suspended monorail system between vehicle and bridge are significant in the case studied, and it is strongly suggested to take necessary measures for vibration suppression. The simulation of track irregularity is a critical factor for its vibration safety, and the track irregularity of A-level road roughness negatively influences the system vibration safety. View Full-Text
Keywords: traffic safety and response; suspended monorail transit system; finite element method; multi-body system dynamics; vehicle-bridge coupling vibration traffic safety and response; suspended monorail transit system; finite element method; multi-body system dynamics; vehicle-bridge coupling vibration
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MDPI and ACS Style

Bao, Y.; Li, Y.; Ding, J. A Case Study of Dynamic Response Analysis and Safety Assessment for a Suspended Monorail System. Int. J. Environ. Res. Public Health 2016, 13, 1121.

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