SOIL-STRUCTURE INTERACTION ANALYSIS OF LARGE-DIAMETER MONOPILE OF OFFSHORE WIND TURBINE BASED ON CENTRIFUGAL MODEL TEST

Liu Tao; Qin Mengfei; Shi Wei

doi:10.19912/j.0254-0096.tynxb.2023-0577

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Acta Energiae Solaris Sinica ›› 2024, Vol. 45 ›› Issue (8) : 537-545. DOI: 10.19912/j.0254-0096.tynxb.2023-0577

SOIL-STRUCTURE INTERACTION ANALYSIS OF LARGE-DIAMETER MONOPILE OF OFFSHORE WIND TURBINE BASED ON CENTRIFUGAL MODEL TEST

Liu Tao¹, Qin Mengfei², Shi Wei²

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Abstract

The foundation is the final carrier of the upper load of wind turbine. In this paper, the study on the mechanical properties of soft and over consolidated soil foundation in coastal China is carried out to provide guidance for the design of offshore wind turbine. The static characteristics of single pile foundation are analyzed and compared by centrifugal model test. The results show that the centrifugal model test of pile foundation can reflect the stress state and pile-soil interaction well, and the deformation mode and pile-soil interaction of single piles with different diameters are different in soft clay. p-y curves in the code are not suitable for offshore soil. According to the test results, the calculation model of dimensionless level force majeure coefficient changing with buried depth and the cyclic stress amplitude is put forward, which will provide reference for offshore wind.

Key words

offshore wind power / wind turbines / soil-structure interaction / centrifugal model test / cyclic loading / p-y model / soil resistance coefficient

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Liu Tao, Qin Mengfei, Shi Wei. SOIL-STRUCTURE INTERACTION ANALYSIS OF LARGE-DIAMETER MONOPILE OF OFFSHORE WIND TURBINE BASED ON CENTRIFUGAL MODEL TEST[J]. Acta Energiae Solaris Sinica. 2024, 45(8): 537-545 https://doi.org/10.19912/j.0254-0096.tynxb.2023-0577

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