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Physical model studies on damage and stability analysis of breakwaters armoured with geotextile sand containers
Geotextiles and Geomembranes ( IF 5.2 ) Pub Date : 2020-12-29 , DOI: 10.1016/j.geotexmem.2020.12.001
Tom Elias , Kiran G. Shirlal , Kajal E.V.

Harnessing the advantages of geotextile sand containers (GSCs), numerous submerged breakwaters and shoreline protection structures have been constructed worldwide. But an emerged breakwater structure with geotextile armour units, capable of replacing the conventional structures, is rarely discussed. A 1:30 scaled physical experimentation is chosen as a preliminary investigation to test the feasibility of using GSCs as breakwater armour units. Structural design is evolved based on a comprehensive literature survey. The paper focuses on the stability parameters and damage characteristics of the proposed structure. Four different configurations are subjected to waves, confining to Mangaluru's wave parameters. Effect of armour unit size and sand fill ratio on the stability of the structure is analysed and it is concluded that changing sand fill ratio from 80% to 100% shot up the structural stability to a maximum of 14%. Increasing bag size also resulted in the increased stability up to 8%. Experiments revealed that the best performing configuration could withstand wave heights up to 2.7 m. Stability curves for all tested configurations are discussed and can serve as an effective guideline for designing GSC breakwaters.



中文翻译:

土工布沙子容器装甲防波堤破坏与稳定性分析的物理模型研究。

充分利用土工布制沙子容器(GSC)的优势,全世界已建造了许多水下防波堤和海岸线保护结构。但是,很少有人讨论能够形成具有土工布装甲单元的防波堤结构,该结构能够代替传统结构。选择1:30规模的物理实验作为初步研究,以测试将GSC用作防波堤装甲部队的可行性。结构设计是根据全面的文献调查得出的。本文着重于所提出结构的稳定性参数和损伤特性。四种不同的配置受到波动的限制,仅限于Mangaluru的波动参数。分析了装甲单位大小和填沙率对结构稳定性的影响,得出的结论是:将填沙率从80%更改为100%可使结构稳定性最高达到14%。袋子尺寸的增加也使稳定性提高了8%。实验表明,性能最佳的配置可以承受高达2.7 m的波高。讨论了所有测试配置的稳定性曲线,这些曲线可作为设计GSC防波堤的有效指南。

更新日期:2020-12-29
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