TY - JOUR
T1 - Experimental and numerical investigation on wave impacts on box-girder bridges
AU - Zhu, Deming
AU - Dong, You
AU - Frangopol, Dan M.
N1 - Funding Information:
The study has been supported by the Research Grant Council of Hong Kong (PolyU 252161/18E and PolyU 15221521) and the Research Institute for Sustainable Urban Development, the Hong Kong Polytechnic University (PolyU1-BBWM). The support is gratefully acknowledged. The opinions and conclusions presented in this paper are those of the authors and do not necessarily reflect the views of the sponsoring organizations.
Publisher Copyright:
© 2022 Informa UK Limited, trading as Taylor & Francis Group.
PY - 2022
Y1 - 2022
N2 - Climate change could result in more extreme weather events and induce increasing challenges to the low-lying coastal bridges. The structural performance of box-girder bridges under wave impacts was seldom investigated. In this paper, a three-dimensional (3D) computational fluid dynamics (CFD) model is established to simulate the wave-bridge interactions, and laboratory experiments are conducted to investigate wave impacts on a bridge. The experiments and 3D CFD simulations are unique as compared with other relevant studies since they provide the complex wave-bridge interactions through dynamic and spatial analyses. Specifically, time histories of vertical and horizontal wave forces are measured through experiments. The time-dependent pressure distributions, wave-induced forces, and overturning moments on the bridge model are computed with the CFD model. The effects of different parameters on the maximum wave forces are discussed. Also, comparisons of the differences between two-dimensional (2D) and 3D CFD models are conducted. Then, the results are converted to a prototype scale to explore the effects of wave impacts, and prediction formulas are proposed accordingly. This study combining experimental and 3D numerical investigations could help improve understanding of the wave-bridge interaction mechanism, and further aid the optimal and robust designs of coastal bridges.
AB - Climate change could result in more extreme weather events and induce increasing challenges to the low-lying coastal bridges. The structural performance of box-girder bridges under wave impacts was seldom investigated. In this paper, a three-dimensional (3D) computational fluid dynamics (CFD) model is established to simulate the wave-bridge interactions, and laboratory experiments are conducted to investigate wave impacts on a bridge. The experiments and 3D CFD simulations are unique as compared with other relevant studies since they provide the complex wave-bridge interactions through dynamic and spatial analyses. Specifically, time histories of vertical and horizontal wave forces are measured through experiments. The time-dependent pressure distributions, wave-induced forces, and overturning moments on the bridge model are computed with the CFD model. The effects of different parameters on the maximum wave forces are discussed. Also, comparisons of the differences between two-dimensional (2D) and 3D CFD models are conducted. Then, the results are converted to a prototype scale to explore the effects of wave impacts, and prediction formulas are proposed accordingly. This study combining experimental and 3D numerical investigations could help improve understanding of the wave-bridge interaction mechanism, and further aid the optimal and robust designs of coastal bridges.
KW - 3D CFD simulation
KW - box-girder bridges
KW - laboratory experiment
KW - overturning moment
KW - solitary wave
KW - wave force prediction method
UR - http://www.scopus.com/inward/record.url?scp=85125903871&partnerID=8YFLogxK
U2 - 10.1080/15732479.2022.2044356
DO - 10.1080/15732479.2022.2044356
M3 - Journal article
AN - SCOPUS:85125903871
SN - 1573-2479
VL - 18
SP - 1379
EP - 1397
JO - Structure and Infrastructure Engineering
JF - Structure and Infrastructure Engineering
IS - 10-11
ER -