Experimental Analysis of the Effect of a Submerged obstacle and Floating Wave Barrier in front of a Rubble Mound Breakwater on Diminishing the Damage Parameter
Publish place: International Journal of Coastal, Offshore and Environmental Engineering، Vol: 7، Issue: 2
Publish Year: 1401
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_IJCOE-7-2_005
تاریخ نمایه سازی: 23 خرداد 1402
Abstract:
The aim of this research was to compare the performance of a submerged obstacle and floating wave barrier in the stability of rubble mound breakwaters based on the damage parameter. The submerged obstacle was attached to the toe, and the floating wave barrier was installed ۵۰ cm from a reshaping breakwater. We carried out tests in a ۳۵ m flume at SCWMRI. Random waves with the JONSWAP spectrum influenced the breakwater. We then analyzed the structure's reshaping using close-range photogrammetric imaging by constructing the DEM and DSM to record the displacement of rocks. Furthermore, we obtained the eroded area and the damage parameter from the integrated model at eight cross-sections at equal distances. We showed that the damage parameter increased by ۳۹.۱۲ and ۴۴.۴۴%, respectively, by increasing the relative wave height from ۰.۳۶ to ۰.۴۸ and ۰.۶. Also, the damage parameter increased by ۲۲.۹۴ and ۲۸.۲۶%, respectively, by increasing the relative wave period from ۰.۶ to ۰.۸ and ۱. In addition, regarding different modes, we obtained the damage parameter in the breakwater without the submerged obstacle and the floating barrier ۱.۱۱۶ under random waves. The damage parameter decreased to ۰.۷۰۱ (i.e., ۳۷.۱۹%) by using the submerged obstacle, while the wave barrier reduced this parameter to ۰.۷۳۵ (i.e., ۳۴.۱۴%); thus, the obstacle has outperformed the wave barrier. Using the obstacle simultaneously with the wave barrier reduced the damage parameter by ۵۱.۷۹%, confirming the highest efficiency and performance among models. Consequently and based on the experiments and findings in this study, this model was suggested for adoption.
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Authors
Ramin Vfaeipour sorkhabi
Islamic Azad University,Tabriz Branch
MohammadTaghi Alami
Department of Water Resources Management, Faculty of Civil Engineering, University of Tabriz, Tabriz, Iran
Alireza Naseri
Assistant Professor, Department of Civil Engineering, Tabriz Branch, Islamic Azad University, Tabriz, Iran
Alireza Mojtahedi
Department of Water Resources Management, Faculty of Civil Engineering, University of Tabriz, Tabriz, Iran
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