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Article

3D Numerical Modeling and Quantification of Oblique Wave Forces on Coastal Bridge Superstructures

by 1, 2, 2,* and 2,3
1
Shenzhen Urban Transport Planning Center Co., Ltd., Shenzhen 518000, China
2
Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hong Kong, China
3
Research Institute for Sustainable Urban Development, The Hong Kong Polytechnic University, Hong Kong, China
*
Author to whom correspondence should be addressed.
Academic Editors: Diego Vicinanza and Denis Istrati
J. Mar. Sci. Eng. 2022, 10(7), 860; https://0-doi-org.brum.beds.ac.uk/10.3390/jmse10070860
Received: 4 May 2022 / Revised: 24 May 2022 / Accepted: 26 May 2022 / Published: 23 June 2022
Simply supported bridges comprise the majority of bridge systems in coastal communities and are susceptible to severe damage from extreme waves induced by storms or tsunamis. However, the effects of oblique wave impacts have been less investigated due to the lack of appropriate numerical models. To address this issue, this study investigates the effects of wave incident angles on coastal bridge superstructures by developing an advanced computational fluid dynamics (CFD) model. Different wave scenarios, including wave height, relative clearance, incident angle, and wavelength are tested. It is found that the maximum wave forces in the horizontal and longitudinal directions could reach 1901 and 862 kN under extreme conditions, respectively, destroying bearing connections. Three surrogate models, i.e., the Gaussian Kriging surrogate model, the Artificial Neural Network (ANN), and the Polynomial Chaos Expansion (PCE), are established by correlating the wave parameters with the maximum wave forces. Through comparisons among the three surrogate models, it is found that the 3-order PCE model has better performance in predicting loads in vertical and horizontal directions, while the ANN model is more suitable for results in the longitudinal direction. This study contributes to the optimized design of coastal bridges and also offers an opportunity for future studies to investigate hazard damage-mitigation measures. View Full-Text
Keywords: coastal bridge; oblique wave; computational fluid dynamics; surrogate model coastal bridge; oblique wave; computational fluid dynamics; surrogate model
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MDPI and ACS Style

Jia, L.; Zhang, Y.; Zhu, D.; Dong, Y. 3D Numerical Modeling and Quantification of Oblique Wave Forces on Coastal Bridge Superstructures. J. Mar. Sci. Eng. 2022, 10, 860. https://0-doi-org.brum.beds.ac.uk/10.3390/jmse10070860

AMA Style

Jia L, Zhang Y, Zhu D, Dong Y. 3D Numerical Modeling and Quantification of Oblique Wave Forces on Coastal Bridge Superstructures. Journal of Marine Science and Engineering. 2022; 10(7):860. https://0-doi-org.brum.beds.ac.uk/10.3390/jmse10070860

Chicago/Turabian Style

Jia, Lei, Yu Zhang, Deming Zhu, and You Dong. 2022. "3D Numerical Modeling and Quantification of Oblique Wave Forces on Coastal Bridge Superstructures" Journal of Marine Science and Engineering 10, no. 7: 860. https://0-doi-org.brum.beds.ac.uk/10.3390/jmse10070860

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