- ISSN 0258-2724
- CN 51-1277/U
- EI Compendex
- Scopus
- Indexed by Core Journals of China, Chinese S&T Journal Citation Reports
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| Citation: | KANG Azhen, GU Yuhang, ZHANG Dongming, JIN Ke, ZHU Bing, YANG Bing. Wave Flume Test and Simplified Algorithm for Freak Wave Forces on a Dumbbell-Shaped Bridge Structure[J]. Journal of Southwest Jiaotong University, 2023, 58(5): 1017-1025. doi: 10.3969/j.issn.0258-2724.20210380
|
In order to study the effects of freak wave parameters on the wave force of a new dumbbell-shaped bridge structure, a series of wave flume model tests were conducted. Firstly, the influences of peak frequency, frequency bandwidth and focusing position on wave elevation time history and wave crest around the dumbbell-shaped bridge were analyzed. And the influences of the wave parameters mentioned above on the freak wave force time history and the statistical peak value were investigated. Finally, based on the classical diffraction theory, a simplified calculation method for the freak wave force spectrum on the new dumbbell-shaped bridge structure was proposed. The results show that the peak frequency, focusing positions and frequency bandwidth have little influence on the wave elevation around the dumbbell-shaped bridge structure with a small difference of less than 3%. The peak frequency and focusing positions have great influence on the freak wave force of dumbbell-shaped bridge structure. When the peak frequency increases from 0.6 Hz to 1.1 Hz, the horizontal wave force increases first and then decreases with a maximum range of 11.0%, while the vertical wave force decreases by 57.0%. When the frequency bandwidth increases from 0.5 Hz to 0.8 Hz, the horizontal wave force decreases by 2.1% and the vertical wave force increases by 5.9%. When the focusing position moves from the surge side of the structure to the back/opposite side, the change amplitude of horizontal wave force is less than 5%, and that of vertical wave force is less than 3%. The comparison of experimental data and theoretical analysis proves that the simplified algorithm based on the diffraction theory can effectively estimate the wave force spectrum of dumbbell-shaped bridge structure under freak waves.
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| 1. | 《中国公路学报》编辑部. 中国桥梁工程学术研究综述·2024. 中国公路学报. 2024(12): 1-160 .  |
Figures(7) / Tables(1)
KANG Azhen, GU Yuhang, ZHANG Dongming, JIN Ke, ZHU Bing, YANG Bing. Wave Flume Test and Simplified Algorithm for Freak Wave Forces on a Dumbbell-Shaped Bridge Structure[J]. Journal of Southwest Jiaotong University, 2023, 58(5): 1017-1025. doi: 10.3969/j.issn.0258-2724.20210380
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