Impact Pressure Influence of Flood on Bridge Deck under Sediment Deposition Conditions: An Experimental Study
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Published:2023-09-15
Issue:18
Volume:15
Page:13778
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ISSN:2071-1050
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Container-title:Sustainability
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language:en
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Short-container-title:Sustainability
Author:
Niu Zhipan12, Long Yi1, Meng Chuke1, Yang Hang1, Luo Yihan1, Zhao Weiyang12ORCID
Affiliation:
1. Institute for Disaster Management and Reconstruction, Sichuan University, Chengdu 610207, China 2. State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu 610065, China
Abstract
This paper investigates the impact of sediment deposition and inflow conditions on horizontal impact pressure and frequency analysis of bridge deck vibrations during flooding. Flooding-induced pressure and vibrations contribute to bridge collapse, and sediment deposition influences water flow and impact pressure. The study explores the relationship between sediment deposition height and impact pressure, revealing a significant increase as sediment approaches 50% of bridge deck clearance. Sediment amplifies impact pressure response to flow velocity changes. The dimensionless sediment deposition height has a greater influence on impact pressure compared to the inflow Froude number. Two distinct frequencies, dominant and secondary, are identified for impact pressure and water level fluctuations. Dominant frequencies positively correlate with sediment deposition height and Froude number, indicating an increasing trend. Secondary frequencies remain stable (0.31–0.58 Hz). These findings enhance understanding of flow dynamics and bridge–flow interaction in sediment-deposited channels, providing theoretical support for evaluating and managing disasters related to bridges in such environments. Overall, this research contributes to the field of bridge engineering and supports improved design and maintenance practices for bridges exposed to sediment-deposited channels.
Funder
National Natural Science Foundation of China China Postdoctoral Science Foundation Sichuan Science and Technology Program CAS Light of West China Program
Subject
Management, Monitoring, Policy and Law,Renewable Energy, Sustainability and the Environment,Geography, Planning and Development,Building and Construction
Reference31 articles.
1. Why America’s Bridges Are Crumbling;Dunker;Sci. Am.,1993 2. Woodward, R.J., Kaschner, R., Cremona, C., and Cullington, D. (1999). Review of Current Procedures for Assessing Load Carrying Capacity Status C, Transport Research Laboratory. 3. Koh, H.M. (2008). Bridge Maintenance, Safety, Management, Health Monitoring and Informatics, Taylor & Francis. 4. Analysis of recent bridge failures in the United States;Wardhana;J. Perform. Constr. Facil.,2003 5. Lee, G.C., Mohan, S.B., and Huang, C. (2013). A Study of U.S. Bridge Failures (1980–2012), State University of New York at Buffalo.
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