非对称水平循环荷载下海上风电大直径单桩响应分析

杨晋晖; 程星磊; 鹿群; 刘举; 孙锐

doi:doi:10.19912/j.0254-0096.tynxb.2024-2118

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非对称水平循环荷载下海上风电大直径单桩响应分析

更新时间：2026-07-22

- 非对称水平循环荷载下海上风电大直径单桩响应分析
- Vol. 47, Issue 4, Pages: 258-267(2026)
- 作者机构：
- 作者简介：
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- DOI：doi:10.19912/j.0254-0096.tynxb.2024-2118
  CLC： TU470
- Online First：08 May 2026，
  
  Published：2026
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杨晋晖, 程星磊, 鹿群, et al. 非对称水平循环荷载下海上风电大直径单桩响应分析[J]. 2026, 47(4): 258-267.
DOI：

杨晋晖, 程星磊, 鹿群, et al. 非对称水平循环荷载下海上风电大直径单桩响应分析[J]. 2026, 47(4): 258-267. DOI： doi:10.19912/j.0254-0096.tynxb.2024-2118.

摘要

基于边界面循环p-y模型，利用Abaqus软件的用户自定义单元（UEL）接口，开发软黏土的循环p-y弹簧单元，利用该弹簧单元建立大直径单桩与软土地基相互作用有限元模型，系统研究非对称水平循环荷载作用下单桩基础的动力响应。开发的p-y弹簧单元能有效模拟软黏土的非线性滞回、塑性位移累积和刚度弱化特性。数值模拟结果探明非对称循环荷载下桩头位移、泥面转角、桩身挠度与弯矩等随循环次数的演化规律，揭示循环荷载模式与荷载水平对桩身响应的影响规律。研究成果深化水平受荷桩土相互作用机理的理解，能为海上风电大直径单桩基础设计提供一定的参考。

Abstract

Based on the bounding surface cyclic model

the cyclic spring element for soft clay is developed by using the user-defined element （UEL） interface of Abaqus software. The developed spring element is used to establish a finite element model of the interaction between large-diameter monopile and soft clay ground. Then

dynamic responses of monopile foundation under asymmetric horizontal cyclic loading are systematically investigated. The developed spring element can effectively simulate the nonlinear hysteresis

plastic displacement accumulation and stiffness degradation characteristics of soft clay. The numerical simulation results show the evolution of pile head displacement

mud surface rotation angle

pile deflection and bending moment with the number of cycles under asymmetric cyclic loading

and reveal the influence of cyclic loading mode and loading level on the pile response. The research results deepen the understanding of the interaction mechanism between horizontally loaded pile and soil

which can provide a certain reference for the design of large-diameter monopile foundation for offshore wind turbines.

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