Simulation and Experimental Study on Bridge–Vehicle Impact Coupling Effect under Pavement Local Deterioration

Author:

Zhong Jiwei123,Wang Jiyuan4,Jiang Yuyin35,Li Ruichang35,Zhang Xiedong1,Liu Yingqi13ORCID

Affiliation:

1. School of Transportation and Logistics, Wuhan University of Technology, Wuhan 430074, China

2. China Railway Construction Bridge Engineering Bureau Group Co., Ltd., Wuhan 430050, China

3. State Key Laboratory of Bridge Intelligent and Green Construction, Wuhan 430050, China

4. Jiangsu Provincial Transportation Engineering Group Co., Ltd., Zhenjiang 212100, China

5. China Railway Bridge Science Research Institute, Ltd., Wuhan 430050, China

Abstract

With the rapid development of China’s transportation network, the demand for bridge construction is increasing, the traffic volume is increasing yearly, and the average vehicle speed and the frequency of overloaded vehicles crossing bridges are soaring. When a vehicle passes over a highway bridge, it can easily form a coupling vibration between the vehicle and bridge due to the excitation of the expansion joint, the unevenness of the bridge deck, and the existing coating-hole. The impact effect is significant, which seriously affects the operation safety of both the vehicle and bridge, seriously damaging the service life of the bridge. Due to the influence of construction technology, it is common for the vibration to meet transverse and longitudinal expansion joints of a prefabricated girder bridge, where an aging bridge deck frequently results in bulges and potholes in asphalt pavement. The bridge vibration amplification effect under the dynamic load of heavy, high-speed vehicles is significant, and research about the large impact coefficient of bridges with local pavement deterioration is urgently needed. This study used SIMULINK simulation software and involved conducting several bridge model tests. Dynamic simulation analyses and running vehicle tests on scaled and real bridge models were carried out to study the coupling vibration response of bridge decks in the presence of different pothole sizes. The results show that the impact effect of low-speed vehicles passing through a larger-sized pothole is relatively significant, and the impact coefficient can be amplified to 214% of the original value under good road surfaces in extreme cases. The vehicle–bridge coupling impact effect of potholes is similar to bulges. This relevant work could provide suggestions for the operational performance evaluation and maintenance of bridges with local pavement deterioration.

Funder

National Key Research and Development Program of China

Major Special Project of Science and Technology Research and Development of China Railway Group Limited

Major Project of China Railway Major Bridge Engineering Group

Publisher

MDPI AG

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