基于CEL的海上自升式稳桩平台桩基竖向承载力  

Vertical Bearing Capacity of Pile Foundation for Offshore Jack-up Stable Pile Platform Based on CEL

作　　者：许海波 叶兆艺 郑龙 沈佳轶[3] 朱亮 李超杰 XU Haibo;YE Zhaoyi;ZHENG Long;SHEN Jiayi;ZHU Liang;LI Chaojie(Power China Huadong Engineering Co.,Ltd.,Hangzhou 311122,Zhejiang,China;Zhejiang East China Engineering Consulting Co.,Ltd.,Hangzhou 311122,Zhejiang,China;Ocean College,Zhejiang University,Zhoushan 316021,Zhejiang,China)

机构地区：[1]中国电建集团华东勘测设计研究院有限公司,浙江杭州311122 [2]浙江华东工程咨询有限公司,浙江杭州311122 [3]浙江大学海洋学院,浙江舟山316021

出　　处：《中国海洋平台》2025年第1期71-75,87,共6页China offshore Platform

基　　金：中国电建集团华东勘测设计研究院有限公司科技项目(编号:KY2020-ZX-13)。

摘　　要：采用有限元软件Abaqus中的耦合欧拉-拉格朗日(Coupled Eulerian-Lagrangian,CEL)数值模拟方法分析江苏启东海域某自升式稳桩平台桩基承载特性,结果表明:CEL数值模拟方法可以有效模拟桩腿贯入地层全过程,揭示桩腿贯入过程中土体密度演化规律;CEL数值模拟结果与采用《海洋井场调查规范》所得的桩基承载力特征曲线基本一致;推荐桩基安全贯入深度为10.0 m,位于土层②-2,粉质黏土层,此时理论和数值分析所得的桩基承载力都为4.0 MN。所得结果可为江苏启东海域自升式稳桩平台的安全作业提供理论支持。The Coupled Eulerian-Lagrangian(CEL)numerical simulation method in the finite element software Abaqus is used to analyze the bearing characteristics of a jack-up stable pile platform in Qidong sea area of Jiangsu Province.The results show that:CEL numerical simulation method can effectively simulate the whole process of the penetration of the pile into the stratum,and reveal the soil density evolution rule in the process of pile penetration;CEL numerical simulation result is basically consistent with the characteristic curve of the pile bearing capacity obtained in the Code for Marine Well Site Investigation;it is recommended that the safe penetration depth of the pile foundation is 10 m,which is located in soil layer②-2 and silty clay layer,in this case,the bearing capacity of the pile foundation obtained by the theoretical and numerical analysis is 4.0 MN.The results can provide theoretical support for the safe operation of the jack-up stable pile platform in Qidong sea area,Jiangsu Province.

关 键 词：自升式稳桩平台 耦合欧拉-拉格朗日(Coupled Eulerian-Lagrangian CEL)数值模拟 理论分析 竖向承载力 

分 类 号：P75[天文地球—海洋科学]