海上风电大直径桩基导管架灌浆连接段力学特性分析  

Mechanical characterization of grouted connections in large diameter pile based jacket foundations for offshore wind turbines

作　　者：周益君 黄玉佩 陈鹏宇 靳胜举 金涛 黄佳佳 黄建武 ZHOU Yijun;HUANG Yupei;CHEN Pengyu;JIN Shengju;JIN Tao;HUANG Jiajia;HUANG Jianwu(China Energy Engineering Group Zhejiang Electric Power Design Institute Co.,Ltd.,Hangzhou 310012,China)

机构地区：[1]中国能源建设集团浙江省电力设计院有限公司,浙江杭州310012

出　　处：《能源工程》2024年第6期69-75,共7页Energy Engineering

摘　　要：聚焦海上风电大直径桩基导管架基础中的灌浆连接段,针对其在复杂荷载作用下的力学特性进行深入分析。采用ABAQUS有限元方法,模拟了不同桩径灌浆连接段在轴向和弯矩荷载下的应力分布与变形情况。研究发现,大直径灌浆连接段受力更为复杂,应力集中现象显著。通过优化导管腿与面板布局、调整面板斜率及肋板设计,有效改善了应力分布。此外,提出了一种新型灌浆段结构,其应力分布均匀,承载性能显著提升,最大应力较原型结构减少38.74%。本研究为海上风电大直径桩基灌浆连接段的设计优化提供了科学依据,有助于推动海上风电海洋工程领域的技术进步。Focusing on the grouted connection segment of large-diameter pile foundations in offshore wind power structures,an indepth analysis on the mechanical properties of this segment under complex loading conditions was conducted.The finite element method ABAQUS was used to simulate the stress distribution and deformation characteristics of the grouted connection segment with varying pile diameters under axial and bending loads.The findings of the research indicate that large-diameter grouted connection segments are subjected to more intricate stress states,exhibiting pronounced concentration of stress.By optimizing the layout of tubular legs and panels,adjusting the panel slope,and refining rib designs,the distribution of stress was effectively improved.Moreover,a novel structural design for the grouted segment was proposed,which exhibited a more uniform stress distribution and a marked enhancement in load-bearing performance,resulting in a 38.74%reduction in maximum stress compared to the original design.This study offers a scientific foundation for the optimization of grouted connection segments in offshore wind power large-diameter pile foundations,thereby contributing to technological advancements in oceanic engineering.

关 键 词：海上风电 灌浆链接段 有限元分析 

分 类 号：TM614[电气工程—电力系统及自动化]