Numerical analysis of buckling characteristics of suction caisson foundation during penetration

Journal of Lanzhou University of Technology ›› 2025, Vol. 51 ›› Issue (2): 135-142.

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Numerical analysis of buckling characteristics of suction caisson foundation during penetration

REN Yan-zhong^1,2, ZHAO Xue-liang³, LI Yang-yang³, SUI Shu-huan³ SONG Qi-ming⁴, YOU Xian-hui⁴

1. Hebei Key Laboratory of Low Carbon and High Efficiency Power Generation Technology, North China Electric Power University, Baoding071003, China;
2. China Guangdong Nuclear New Energy Holdings Co. Ltd., Beijing 100070, China;
3. Key Laboratory of Concrete and Prestressed Concrete Structure of Ministry of Education, Southeast University,Nanjing 211189, China;
4. Fujian Yongfu Power Engineering Co. Ltd., Fuzhou 350001, China

Received:2022-04-08 Online:2025-04-28 Published:2025-04-29

Abstract

Abstract: Suction caisson foundation is a new type of foundation adopted by offshore wind turbine due to its advantages of high efficiency and economy. But there is a risk of buckling failure of cylinder wall during the installation. So far, there is still a lack of specifications and standards for this problem in the industry. In this paper, the commonly used reference codes and standards in this industry were collected and analyzed. A problem that the current reference codes and standards are inconsistent with the assumptions of boundary conditions is found in the design of suction caisson. The influence of soil and barrel cover on boundary conditions was simulated and analyzed by finite element method. And the numerical results were compared with the calculation results from various standard methods. Finally, the allowable penetration suction envelope controlled by buckling failure was provided, which is supposed to be helpful for the design of suction foundation.

Key words: suction caisson foundation, critical buckling stress, finite element simulation, boundary condition

CLC Number:

TU411

REN Yan-zhong, ZHAO Xue-liang, LI Yang-yang, SUI Shu-huan SONG Qi-ming, YOU Xian-hui. Numerical analysis of buckling characteristics of suction caisson foundation during penetration[J]. Journal of Lanzhou University of Technology, 2025, 51(2): 135-142.

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Numerical analysis of buckling characteristics of suction caisson foundation during penetration

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