Modelling the drained response of bucket foundations for offshore wind turbines under general monotonic and cyclic loading

被引：57

作者：

Foglia, Aligi ^{[1
]}

Gottardi, Guido ^{[2
]}

Govoni, Laura ^{[2
]}

Ibsen, Lars Bo ^{[3
]}

机构：

[1] Fraunhofer IWES, Oldenburg, Germany

[2] Univ Bologna, DICAM, I-40126 Bologna, Italy

[3] Aalborg Univ, Dept Civil Engn, Aalborg, Denmark

来源：

APPLIED OCEAN RESEARCH | 2015年 / 52卷

关键词：

Bucket foundation; Offshore wind turbines; Cyclic loading; Macro-element modelling; Small-scale physical model; SUCTION CAISSON FOUNDATIONS; PLASTICITY MODEL; SPUDCAN FOUNDATIONS; FIELD TRIALS; SAND; CLAY; BEHAVIOR; FOOTINGS;

D O I：

10.1016/j.apor.2015.04.005

中图分类号：

P75 [海洋工程];

学科分类号：

0814 ; 081505 ; 0824 ; 082401 ;

摘要：

The response of bucket foundations on sand subjected to planar monotonic and cyclic loading is investigated in the paper. Thirteen monotonic and cyclic laboratory tests on a skirted footing model having a 0.3 m diameter and embedment ratio equal to 1 are presented. The loading regime reproduces the typical conditions of offshore wind turbines: very large cyclic overturning moment, large cyclic horizontal load and comparatively little, self-weight induced, vertical load. The experimental soil-foundation response is interpreted within the macro-element approach, using an existing analytical model, suitably modified to accommodate the footing embedment and the application of cyclic load. Details of the proposed model are provided together with evidences of its ability to reproduce the essential features of the experimentally observed behaviour. The results of the study aim at increasing the confidence in the use of the macro-element approach to predict the response of bucket foundations for offshore wind turbines, notably as the long-term accumulated displacements are concerned. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：80 / 91

页数：12

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