STUDY ON HORIZONTAL BEARING CHARACTERISTICS OF OFFSHORE WIND POWER EMBEDDED ROCK-SOCKETED JACKET FOUNDATION

Su Kai; Hu Yucheng; Wang Xiangkun; Zhu Hongze

doi:10.19912/j.0254-0096.tynxb.2024-1398

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Acta Energiae Solaris Sinica ›› 2025, Vol. 46 ›› Issue (12) : 233-242. DOI: 10.19912/j.0254-0096.tynxb.2024-1398

STUDY ON HORIZONTAL BEARING CHARACTERISTICS OF OFFSHORE WIND POWER EMBEDDED ROCK-SOCKETED JACKET FOUNDATION

Su Kai^1,3, Hu Yucheng¹, Wang Xiangkun¹, Zhu Hongze¹

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Abstract

In this paper, ABAQUS finite element analysis software is used to establish the rock-socketed model of three-pile jacket foundation, and the horizontal bearing capacity is determined by tangent intersection method, and the horizontal bearing capacity characteristics of the foundation are studied by analyzing the rock-socketed depth of steel pipe piles, grouting material properties and length-diameter ratio of steel pipe piles. The results show that the local regional stress and geotechnical resistance of steel pipe pile in strongly weathered layer reach the maximum; At the initial stage of loading, the grouting material is damaged in tension, and the top of the grouting material is separated from the steel pipe pile. Before reaching the horizontal bearing capacity, the damage zone extends from the tension side to the compression side. Increasing the depth of rock-socketed can significantly improve the horizontal bearing capacity of foundation; The grouting material label has little effect on the horizontal bearing capacity of the foundation, and increasing the grouting thickness can slightly improve the horizontal bearing capacity, but the influence is small; When the pile diameter is changed to improve the ratio of length to diameter, the horizontal bearing capacity of foundation decreases continuously, and the effect is remarkable. Generally speaking, changing the rock-socketed depth and length-diameter ratio of steel pipe piles in rock-socketed environment has a significant influence on the horizontal bearing capacity of foundation.

Key words

offshore wind power / three-pile jacket foundation / rock socketed pile / horizontal bearing capacity / finite element analysis

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Su Kai, Hu Yucheng, Wang Xiangkun, Zhu Hongze. STUDY ON HORIZONTAL BEARING CHARACTERISTICS OF OFFSHORE WIND POWER EMBEDDED ROCK-SOCKETED JACKET FOUNDATION[J]. Acta Energiae Solaris Sinica. 2025, 46(12): 233-242 https://doi.org/10.19912/j.0254-0096.tynxb.2024-1398

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