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http://dx.doi.org/10.7734/COSEIK.2021.34.3.137

Structural Behavior Evaluation of a Cable-Stayed Bridge Subjected to Aircraft Impact: A Numerical Study  

Choi, Keunki (Department of Civil and Environmental Engineering, Dankook University)
Lee, Jungwhee (Department of Civil and Environmental Engineering, Dankook University)
Chung, Chul-Hun (Department of Civil and Environmental Engineering, Dankook University)
An, Dongwoo (Railroad Division, Dohwa Engineering Co., Ltd.)
Yoon, Jaeyong (Department of Civil and Environmental Engineering, Dankook University)
Publication Information
Journal of the Computational Structural Engineering Institute of Korea / v.34, no.3, 2021 , pp. 137-149 More about this Journal
Abstract
Cable-stayed bridges are infrastructure facilities of a highly public nature; therefore, it is essential to ensure operational safety and prompt response in the event of a collapse or damage caused by natural and social disasters. Among social disasters, impact accidents can occur in bridges when a vehicle collides with a pier or when crashes occur due to aircraft defects. In the case of offshore bridges, ship collisions will occur at the bottom of the pylon. In this research, a procedure to evaluate the structural behavior of a cable-stayed bridge for aircraft impact is suggested based on a numerical analysis approach, and the feasibility of the procedure is demonstrated by performing an example assessment. The suggested procedure includes 1) setting up suitable aircraft impact hazard scenarios, 2) structural modeling considering the complex behavior mechanisms of cable-stayed bridges, and 3) structural behavior evaluation of cable-stayed bridges using numerical impact simulation. It was observed that the scenario set in this study did not significantly affect the target bridge. However, if impact analysis is performed through various scenarios in the future, the load position and critical load level to cause serious damage to the bridge could be identified. The scenario-based assessment process employed in this study is expected to facilitate the evaluation of bridge structures under aircraft impact in both existing bridges and future designs.
Keywords
aircraft impact; cable-stayed bridge; social disaster; impact analysis; LS-DYNA;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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