海上水泥土搅拌桩加固钢管桩水平承载特性分析

兰州理工大学学报 ›› 2026, Vol. 52 ›› Issue (2): 129-136.

海上水泥土搅拌桩加固钢管桩水平承载特性分析

赵学亮^*1, 刘锦昆¹, 沈侃敏², 王鑫¹, 邓温妮¹

1.东南大学混凝土及预应力混凝土结构教育部重点实验室, 江苏南京 211189;
2.中国电建集团华东勘测设计研究院有限公司, 浙江杭州 311122

收稿日期:2022-10-06 出版日期:2026-04-28 发布日期:2026-04-28
通讯作者: 赵学亮(1974-),男,山西长治人,博士,副教授. Email:zhaoxl@seu.edu.cn
基金资助:
国家自然科学基金(52378329)

Analysis of lateral bearing behaviour of offshore steel pipe pile reinforced by cement-soil mixing pile

ZHAO Xue-liang¹, LIU Jin-kun¹, SHEN Kan-min², WANG Xin¹, DENG Wen-ni¹

1. Key Laboratory of Concrete and Prestressed Concrete Structure of Ministry of Education, Southeast University, Nanjing 211189, China;
2. Power China Huadong Engineering Corporation Limited, Hangzhou 311122, China

Received:2022-10-06 Online:2026-04-28 Published:2026-04-28

摘要/Abstract

摘要： 依托某海上风电大直径钢管桩加固工程,采用有限元法建立水泥土搅拌桩-钢管桩桩土相互作用三维数值模型,分析水泥土搅拌桩设计参数对钢管桩水平承载特性的影响.结果表明:增大水泥土搅拌桩加固宽度和加固深度均有助于提高单桩水平承载力,当加固宽度为2D、加固深度为3D时,加固效率较高;在此基础上,合理布置加固体进一步提高结构受力性能和加固效率,水平极限承载力较未加固提高1.5倍.对不同加固形式下钢管桩在水平荷载作用下的桩身位移、水平荷载—泥面转角、弯矩及桩侧土抗力进行对比分析表明,采用水泥土搅拌桩加固后,桩顶水平位移可减少43.93%~56.68%,桩身最大弯矩减少7.32%~24.37%,且加固范围内桩侧土抗力随加固深度增加明显增大.

关键词: 有限元分析, 大直径钢管桩, 水泥土搅拌桩, 水平承载特性, 工程设计优化

Abstract: Considering the complexity and cost of field testing, this study established a three-dimensional finite element model based on an actual offshore wind power project. The model was used to simulate the interaction among cement-soil mixing piles, the steel pipe pile, and the surrounding soil. It was further employed to investigate the effects of key reinforcement parameters on the lateral bearing behaviour of the steel pipe pile. The results indicate that increasing the reinforcement width and depth of cement-soil mixing piles enhances the lateral bearing capacity of the single pile. When the reinforcement width and depth are 2D and 3D, respectively, the reinforcement efficiency is relatively high. Furthermore, an appropriate layout improves both the structural performance and the reinforcement efficiency, increasing the lateral ultimate bearing capacity by approximately 150% compared with the unreinforced condition. Comparative analyses of pile displacement, lateral load-mudline rotation, bending moment, and pile-side soil resistance under different reinforcement schemes show that the pile-head horizontal displacement is reduced by 43.93%~56.68%, the maximum pile bending moment decreases by 7.32%~24.37%, and the pile-side soil resistance within the reinforced zone increases significantly

Key words: finite element analysis, large diameter steel pipe pile, cement-soil mixing pile, horizontal bearing characteristics, engineering design optimization

中图分类号:

TU473.11

赵学亮, 刘锦昆, 沈侃敏, 王鑫, 邓温妮. 海上水泥土搅拌桩加固钢管桩水平承载特性分析[J]. 兰州理工大学学报, 2026, 52(2): 129-136.

ZHAO Xue-liang, LIU Jin-kun, SHEN Kan-min, WANG Xin, DENG Wen-ni. Analysis of lateral bearing behaviour of offshore steel pipe pile reinforced by cement-soil mixing pile[J]. Journal of Lanzhou University of Technology, 2026, 52(2): 129-136.

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链接本文: https://journal.lut.edu.cn/CN/

https://journal.lut.edu.cn/CN/Y2026/V52/I2/129

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