考虑安装效应的海上风电桩靴基础在位刚度分析

郑灿; 沈泽荣; 陈珂; 王洪庆; 付登锋

doi:10.19912/j.0254-0096.tynxb.2025-0186

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考虑安装效应的海上风电桩靴基础在位刚度分析

更新时间：2026-07-22

- 考虑安装效应的海上风电桩靴基础在位刚度分析
- Vol. 47, Issue 6, Pages: 415-423(2026)
- 作者机构：
- 作者简介：
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- DOI：10.19912/j.0254-0096.tynxb.2025-0186
  CLC： TM614
- Online First：08 July 2026，
  
  Published：2026
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郑灿, 沈泽荣, 陈珂, et al. 考虑安装效应的海上风电桩靴基础在位刚度分析[J]. 2026, 47(6): 415-423.
DOI：

郑灿, 沈泽荣, 陈珂, et al. 考虑安装效应的海上风电桩靴基础在位刚度分析[J]. 2026, 47(6): 415-423. DOI： 10.19912/j.0254-0096.tynxb.2025-0186.

摘要

系统模拟海上风电典型地质条件下矩形桩靴基础的贯入过程。研究基于模拟结果

提取发生塑性应变的基础土体范围确定土体软化区域并计算相应的土体强度折减系数。在此基础上构建小变形有限元模型

计算各向刚度折减系数η并与不考虑土体软化的相同模型进行对比探究土体软化效应对桩靴在位刚度的影响。此外

针对剪切刚度系数Gmax/su和破坏剪应变γfp等刚度参数开展系统化参数分析。结果表明：土体软化效应对桩靴各向在位刚度均有不同程度的影响且不可忽视

桩靴基础的各向刚度折减系数均随荷载的增大而减小

变化趋势基本保持一致

各向刚度折减系数随Gmax/su的增大而减小

随γfp的增大而增大。

Abstract

Adopting the CEL finite element method to systematically simulate the penetration process of rectangular spudcan foundations under typical offshore wind geological conditions. Based on simulation results

the extent of plastically strained soil around the foundation is quantified

soil softening zones are identified

and corresponding strength reduction factors are calculated. Subsequently

small-strain finite element model incorporating these softening parameters are developed to calculate directional stiffness reduction coefficient . Comparative analyses with non-softening reference models reveal the substantial influence of soil strength degradation on foundation stiffness. A comprehensive parametric study further evaluates the sensitivity of stiffness characteristics to two critical geotechnical parameters： the normalized shear stiffness ratio and the critical shear strain at failure . Results demonstrate that：1） Soil softening effects varies with different directional in-situ stiffness components

but the extent cannot be neglected; 2） Stiffness reduction coefficients exhibits consistent decreasing trend with increasing level of loading;3） Stiffness increases with higher

but decrease with larger .

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references

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