A comparison of the bearing capacity between shallow bucket foundations and solid foundations in clay. (8th August 2020)

• Record Type: Journal Article
• Authors: Ma, Pengcheng; Liu, Run; Chen, Guangsi; Lian, Jijian; Li, Chengfeng
• Is Part Of: Ships and offshore structures. Volume 15:Number 7(2020)
• Page Start: 722
• Page End: 736
• Publication Date: 2020-08-08
• Subjects: Offshore wind turbine foundation -- shallow buckets -- clay -- failure envelopes; Ships -- Periodicals; Offshore structures -- Periodicals; Marine engineering -- Periodicals; Marine engineering -- Technological innovations -- Periodicals; Ocean engineering -- Periodicals; Ocean engineering -- Technological innovations -- Periodicals; 623.8
• DOI: 10.1080/17445302.2019.1671026
• Languages: English
• ISSNs: 1744-5302

Abstract

ABSTRACT: A shallow bucket foundation is a new foundation for offshore wind turbines with advantages of an anti-overturning bearing capacity and differential settlement control. The height-diameter ratio of shallow bucket foundations is less than 0.5. The special structural feature leads to the bucket-soil cooperative bearing mechanism, which is different from the skirts bearing mode of a typical bucket foundation. If stiffness difference between the bucket and the soil is not considered, the bucket and soil are regarded as a whole like a solid foundation. This paper studies difference of failure envelopes between the shallow bucket and solid foundations in clay, derived from three-dimensional finite element analysis. The difference reveals the regularities that the vertical and horizontal ultimate capacities of shallow bucket are better than solid foundation, while the anti-overturning ultimate and multi-ultimate capacities of shallow bucket are worse.