STUDY ON VERTICAL ULTIMATE BEARING CAPACITY OF BUCKET FOUNDATIONS BASED ON LOWER BOUND THDREM OF LIMIT ANALYSIS IN LAYERED FOUNDATION

Shang Jinghong; Yang Wendeng; Yang Jiacheng; Liu Run; Yang Can

doi:10.19912/j.0254-0096.tynxb.2024-0985

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Acta Energiae Solaris Sinica ›› 2025, Vol. 46 ›› Issue (10) : 628-634. DOI: 10.19912/j.0254-0096.tynxb.2024-0985

STUDY ON VERTICAL ULTIMATE BEARING CAPACITY OF BUCKET FOUNDATIONS BASED ON LOWER BOUND THDREM OF LIMIT ANALYSIS IN LAYERED FOUNDATION

Shang Jinghong¹, Yang Wendeng¹, Yang Jiacheng¹, Liu Run², Yang Can²

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Abstract

Bucket foundation has become one of the important foundation forms for offshore wind power in China due to its advantages of low cost, short construction period, and relatively small disturbance to the foundation. There is still a lack of strict theoretical solutions and comprehensive calculation methods for the vertical ultimate bearing capacity of bucket foundations in layered soil foundations. This article uses the finite element limit analysis method to establish a lower bound solution program for the vertical bearing capacity of bucket foundations in layered foundations and verify its accuracy. Conduct in-depth research on the failure mode and bearing characteristics of bucket foundations in layered soil foundations. The results indicate that the ultimate bearing capacity of the foundation is related to the relative thickness of the sand layer H/D, the clay layer su, and the sand layer φ There is a positive correlation between the length to diameter ratio d/D of the bucket foundation. The critical thickness of sand Hcri varies with the upper layer of sand φ and increases with the decveast of the mderlying clay su.

Key words

offshore wind foundation / lower bound finite element method / bucket foundation / foundation vertical bearing capacity / layered soil / bearing characteristics

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Shang Jinghong, Yang Wendeng, Yang Jiacheng, Liu Run, Yang Can. STUDY ON VERTICAL ULTIMATE BEARING CAPACITY OF BUCKET FOUNDATIONS BASED ON LOWER BOUND THDREM OF LIMIT ANALYSIS IN LAYERED FOUNDATION[J]. Acta Energiae Solaris Sinica. 2025, 46(10): 628-634 https://doi.org/10.19912/j.0254-0096.tynxb.2024-0985

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