考虑界面强度的饱和黏土中海上风电筒型基础V-H-M承载力包络面研究

蔺文龙; 顾晓强; 时振昊; 校建东; 林毅峰; 胡靖

doi:10.19912/j.0254-0096.tynxb.2025-0330

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太阳能学报 ›› 2026, Vol. 47 ›› Issue (7) : 98-107. DOI: 10.19912/j.0254-0096.tynxb.2025-0330

考虑界面强度的饱和黏土中海上风电筒型基础V-H-M承载力包络面研究

蔺文龙^1,2, 顾晓强^1,2, 时振昊^1,2, 校建东^1,3, 林毅峰³, 胡靖^1,2

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V-H-M FAILURE ENVELOPE OF OFFSHORE WIND TURBINE BUCKET FOUNDATION IN SATURATED CLAY CONSIDERING SOIL-STRUCTURE INTERFACE STRENGTH

Lin Wenlong^1,2, Gu Xiaoqiang^1,2, Shi Zhenhao^1,2, Xiao Jiandong^1,3, Lin Yifeng³, Hu Jing^1,2

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摘要

为考虑筒型基础与土体的接触条件对其承载特性的影响,引入筒土界面强度系数来反映筒-土接触特性,通过一系列三维有限元分析,研究正常固结黏土中,基础裙边长度、土体不排水抗剪强度及筒土界面强度对竖向（V）、水平（H）组合荷载作用下筒型基础承载力的影响,并采用归一化失效包络面来描述筒型基础在V-H-M组合荷载下的承载力。研究结果表明,筒土界面强度对筒型基础V-H-M承载力的影响明显。基于大量有限元计算分析数据,建立了考虑筒土界面强度的筒型基础单向极限承载力公式及归一化V-H-M承载力包络面表达式。通过对比有限元计算结果与该文及现有文献中的承载力包络面表达式,验证了所提出的强度包络面方程的合理性,结果进一步表明该文包络面能合理反映筒-土接触特性对耦合荷载下筒型基础承载力的影响。

Abstract

To account for the influence of bucket-soil contact conditions on its bearing capacity, this study introduces the bucket-soil interface strength to reflect the contact characteristics between the bucket and soil. Through a series of three-dimensional finite element analyses, the impact of the skirt length, soil undrained shear strength and bucket-soil interface strength on the bearing capacity of the bucket foundation under combined vertical （V）, horizontal （H）, and moment （M） loads in normally consolidated soft clay is investigated. The normalized V-H-M failure envelope is used to describe the bearing capacity of the bucket foundation under V-H-M combined loads. The findings indicate that the bucket-soil interface strength can significantly influence the bearing capacity of the bucket foundation. Through a large number of finite element analyses, the formulas for the uni-directional ultimate bearing capacity of the bucket foundation considering the bucket-soil interface strength, as well as a normalized V-H-M bearing capacity envelope expression, are established. By comparing the finite element analysis results with the strength envelope expressions from this study and existing literature, the validity of the strength envelope proposed in this research has been verified. The results further indicate that the envelope can reasonably reflect the effect of the bucket-soil contact characteristics on the bearing capacity of bucket foundations under coupled V-H-M loading.

导出引用

蔺文龙, 顾晓强, 时振昊, 校建东, 林毅峰, 胡靖. 考虑界面强度的饱和黏土中海上风电筒型基础V-H-M承载力包络面研究[J]. 太阳能学报. 2026, 47(7): 98-107 https://doi.org/10.19912/j.0254-0096.tynxb.2025-0330

Lin Wenlong, Gu Xiaoqiang, Shi Zhenhao, Xiao Jiandong, Lin Yifeng, Hu Jing. V-H-M FAILURE ENVELOPE OF OFFSHORE WIND TURBINE BUCKET FOUNDATION IN SATURATED CLAY CONSIDERING SOIL-STRUCTURE INTERFACE STRENGTH[J]. Acta Energiae Solaris Sinica. 2026, 47(7): 98-107 https://doi.org/10.19912/j.0254-0096.tynxb.2025-0330

中图分类号： TU473

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