Open Access

ARTICLE

Reinforcement Effect Evaluation on Dynamic Characteristics of an Arch Bridge Based on Vehicle-Bridge Coupled Vibration Analysis

by Yanbin Tan¹, Xingwen He^1,*, Lei Shi², Shi Zheng³, Zhe Zhang¹, Xinshan Wang²

1 National & Local Joint Engineering Laboratory of Bridge and Tunnel Technology, Dalian University of Technology, Dalian, 116023, China
2 Design Institute of Civil Engineering & Architecture of Dalian University of Technology Co., Ltd., Dalian, 116023, China
3 Faculty of Infrastructure Engineering, Dalian University of Technology, Dalian, 116023, China

* Corresponding Author: Xingwen He. Email:

(This article belongs to the Special Issue: Computer Modelling in Disaster Prevention and Mitigation for Engineering Structures)

Computer Modeling in Engineering & Sciences 2022, 131(2), 1041-1061. https://doi.org/10.32604/cmes.2022.018543

Received 01 August 2021; Accepted 08 November 2021; Issue published 14 March 2022

Abstract

To numerically evaluate the reinforcement effect on dynamic characteristics of a concrete-filled steel tube arch bridge with vibration problems, a 12-degree-of-freedom sprung-mass dynamic vehicle model and a 3D finite element bridge model were established. Then, the coupled equations of vehicle-bridge interaction were derived and a computer program was developed using the FORTRAN language. This program can accurately simulate vehicle-bridge coupled vibration considering the bumping effect and road surface irregularity during motion of the vehicle. The simulated results were compared with those of relevant literatures to verify the correctness of the self-developed program. Then, three reinforcement schemes for the bridge (Addition of longitudinal beams, Reinforcement of bridge decks, and Replacement of suspenders) were proposed and numerically simulated, and the vibration reduction effects of the three schemes were evaluated based on the numerical results to find effective ones. It is confirmed that the reinforcement scheme of Addition of longitudinal beams shows the most significant vibration reduction effect. It is recommended in the engineering practice that the combination of the reinforcement schemes of Addition of longitudinal beams and Replacement of bridge deck can be used to solve the excessive vibration problem.

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