کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8059312 1520230 2018 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of scour on the structural response of an offshore wind turbine supported on tripod foundation
ترجمه فارسی عنوان
اثر واگرا بر پاسخ ساختاری توربین بادی دریایی بر پایه سه پایه پشتیبانی می شود
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی دریا (اقیانوس)
چکیده انگلیسی
A simplified scour model for tripod foundation taking into account both local scour and global scour is proposed in this paper. The model is incorporated into a three-dimensional (3D) finite element model for analysis of a full-scale offshore wind turbine founded on a tripod structure using realistic structural properties. Applicability of the 3D finite element model is validated using full-scale load test data. Four different scour conditions under two wave situations are examined for the ultimate limit state (ULS), serviceability limit state (SLS) and fatigue limit state (FLS). The results show that scour has a minor effect on the natural frequency of the tripod-supported wind turbine but can significantly increase the maximum cross-sectional von Mises stress of piles under the ULS and increase the deflection of piles within nearly 20 m below the original seabed under the SLS. As for the fatigue life of the tripod structure, it can also be reduced by the effect of scour. These findings provide insights which are useful for development of safe and economic design of offshore wind turbines supported by tripod foundations.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Ocean Research - Volume 73, April 2018, Pages 179-189
نویسندگان
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