海上风机群桩筒基础的力学性能分析  

Mechanical Performance Analysis of Pile-bucket Composite Foundation of Offshore Wind Turbine

作　　者：左熹[1] 许想 周恩全[2] ZUO Xi;XU Xiang;ZHOU En-quan(Jinling Institute of Technology,Nanjing 211169,China;Jiangsu University,Zhenjiang 212013,China)

机构地区：[1]金陵科技学院建筑工程学院,江苏南京211169 [2]江苏大学土木工程与力学学院,江苏镇江212013

出　　处：《金陵科技学院学报》2023年第2期40-45,共6页Journal of Jinling Institute of Technology

基　　金：江苏高校“青蓝工程”资助项目(苏教师函〔2021〕11号)。

摘　　要：基于ABAQUS有限元软件平台建立了海上风机群桩筒基础的有限元模型,对不同桩数、桩径及不同桩分布方式下群桩筒基础的力学性能进行研究,结果表明:不同基础形式的应力均集中于上部结构与筒体结构的连接处,桩身的应力集中于桩顶位置;筒体结构被动区的应力显著高于主动区的应力;群桩筒基础与土体的接触面积比筒型基础更大,提供了更好的转角控制效果。群桩筒基础提升了基础与地基土之间的协同度,有效地提高了群桩筒基础的承载能力。A finite element model of pile-bucket composite foundation of offshore wind turbine was established based on the ABAQUS finite element software platform.The mechanical properties of pile-bucket composite foundation under different pile numbers,pile diameters,and pile distribution modes were studied.The results show that the stress of different foundation types is concentrated at the connection between the upper structure and the tube structure,while the stress of the pile body is concentrated at the pile top position.The stress in the passive zone of the tube structure is significantly higher than that in the active zone.The pile-bucket composite foundation has a larger contact area with the soil than tube foundation,providing better corner control effect.The pile-bucket composite foundation enhances the synergy between the foundation and the foundation soil,effectively improving the bearing capacity of the group pile tube foundation.

关 键 词：海上风机 群桩筒基础 力学性能 应力作用 扭剪作用 

分 类 号：TU476[建筑科学—结构工程]