Behavior of GFRP suction bucket in clay under ultimate limit state

IF 5.7 1区工程技术 Q1 ENGINEERING, CIVIL

Thin-Walled Structures Pub Date : 2025-03-06 DOI:10.1016/j.tws.2025.113139

Zhao-tun An, Hai-lei Kou, Yan Sun, Yan-sheng Wang, Xi-xin Zhang, Jia-qing Lu, Guang-yuan Ma

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引用次数: 0

Abstract

Suction buckets fabricated from glass fibre-reinforced plastic (GFRP) have emerged as alternatives to conventional steel bucket foundations for offshore wind turbines. Numerical models incorporating a GFRP damage degradation model were developed to investigate the structural response of three critical GFRP bucket sections (S1: top transition, S2: mid-skirt, S3: bottom edge) under ultimate limit states. The results indicate that mechanical changes of the bucket skirt in section S1 are minimized, while the response of section S3 is maximized under different fibre orientations (f) and wall thicknesses (t). The maximum principal stress is minimized for f = 45°. The maximum deformation and ellipticity of the bucket skirt are 27 mm and 0.57 %, respectively, across different fibre orientations. The maximum principal stress and maximum circumferential strain show an obvious decreasing trend as the skirt wall thickness increases. When t ≥ 0.6 %D, the gap between the stresses and strains in each section of the bucket skirt decreases significantly. For varying wall thicknesses of the bucket foundation, the maximum deformation of section S3 are approximately 5.5 times that of sections S1. When the target reliabilities are 3.71, 4.26, and 4.75, the corresponding wall thicknesses of the bucket foundations are 0.259 %D, 0.265 %D, and 0.275 %D.

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来源期刊

Thin-Walled Structures 工程技术-工程：土木

CiteScore

9.60

自引率

20.30%

发文量

801

审稿时长

66 days

期刊介绍： Thin-walled structures comprises an important and growing proportion of engineering construction with areas of application becoming increasingly diverse, ranging from aircraft, bridges, ships and oil rigs to storage vessels, industrial buildings and warehouses. Many factors, including cost and weight economy, new materials and processes and the growth of powerful methods of analysis have contributed to this growth, and led to the need for a journal which concentrates specifically on structures in which problems arise due to the thinness of the walls. This field includes cold– formed sections, plate and shell structures, reinforced plastics structures and aluminium structures, and is of importance in many branches of engineering. The primary criterion for consideration of papers in Thin–Walled Structures is that they must be concerned with thin–walled structures or the basic problems inherent in thin–walled structures. Provided this criterion is satisfied no restriction is placed on the type of construction, material or field of application. Papers on theory, experiment, design, etc., are published and it is expected that many papers will contain aspects of all three.