کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8059739 1520340 2016 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Hydraulic stability of nominal and sacrificial toe berms for mound breakwaters on steep sea bottoms
ترجمه فارسی عنوان
پایداری هیدرولیکی برمهای اسمی و محافظتی برای موج شکنهای کوهستانی در پایه های دریای شیب دار
کلمات کلیدی
پایداری هیدرولیک، موج شکن، اسم مستعار برم، انگشت شست، آب کم عمق، پایین دریا دشت، انگشت پا،
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی دریا (اقیانوس)
چکیده انگلیسی
When mound breakwaters are placed on steep sea bottoms in combination with very shallow waters, the design of the toe berm becomes a relevant issue. Toe berms built close to the water surface on a steep sea bottom must withstand such high wave loads that their design may not be feasible with available quarrystones. In this study, a new design method was developed to reduce the rock size by increasing the toe berm width. The analysis involved specific 2D small-scale tests with toe berms of different rock sizes and widths, placed on a m = 1/10 bottom slope with the water surface close to the toe berm crest. Two new concepts were introduced to better characterize damage to wide toe berms: (1) the most shoreward toe berm area which effectively supports the armor layer, in this study referred to as the primary or “nominal” toe berm and (2) the most seaward toe berm area which serves to protect the nominal toe berm, in this study called the secondary or the “sacrificial” toe berm. Damage to the nominal toe berm was used to describe hydraulic stability of wider toe berms. Given a standard toe berm of three rocks wide (nominal toe berm), an equivalent toe berm with damage similar to the nominal toe berm was defined by increasing the berm width and decreasing the rock size. The reduction in rock size showed an inverse 0.4-power relation with the relative berm width.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Coastal Engineering - Volume 114, August 2016, Pages 361-368
نویسندگان
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