INTERPRETATION METHOD FOR SOIL COMPRESSION MODULUS OF OFFSHORE WIND POWER PROJECT IN ZHEJIANG AND JIANGSU BASED ON CPTU

Wang Kuanjun; Jia Zhiyuan; Shen Kanmin; Li Yuping

doi:10.19912/j.0254-0096.tynxb.2023-0944

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Acta Energiae Solaris Sinica ›› 2024, Vol. 45 ›› Issue (10) : 544-553. DOI: 10.19912/j.0254-0096.tynxb.2023-0944

INTERPRETATION METHOD FOR SOIL COMPRESSION MODULUS OF OFFSHORE WIND POWER PROJECT IN ZHEJIANG AND JIANGSU BASED ON CPTU

Wang Kuanjun¹, Jia Zhiyuan², Shen Kanmin³, Li Yuping²

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Abstract

In this paper, based on offshore wind power projects in Zhejiang Jiaxing and Jiangsu Yancheng offshore area, one-dimensional consolidation tests and piezocone penetration tests （CPTU） were carried out. The relationship between the compression modulus Es and the corrected cone tip resistance qt was established by linear, exponential and logarithmic models. It is found that the correlation between Es considering effective in-situ stress and qt is much better than that between compression modulus Es1-2 corresponding to the consolidation stress of 100-200 kPa and qt. The linear fitting formulae between the compression modulus Es and qt of clayey soil are more reliable, where the empirical coefficients α of clayey soil in Jiaxing and Yancheng offshore areas are 1.820 and 3.315, respectively. There is no obvious correlation between Es and qt of sand in both offshore areas, the results show that the lower limit of Es of sand in both offshore areas are 10 MPa.

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offshore wind farms / geotechnical engineering / soils / piezocone penetration test / compression modulus

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Wang Kuanjun, Jia Zhiyuan, Shen Kanmin, Li Yuping. INTERPRETATION METHOD FOR SOIL COMPRESSION MODULUS OF OFFSHORE WIND POWER PROJECT IN ZHEJIANG AND JIANGSU BASED ON CPTU[J]. Acta Energiae Solaris Sinica. 2024, 45(10): 544-553 https://doi.org/10.19912/j.0254-0096.tynxb.2023-0944

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