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分裂球形节点钢管混凝土格构式风力发电机平面塔架损伤分析

Damage analysis of split spherical node concrete filled steel tube lattice wind turbine plane towers.

作者信息

Li Miao, Tao Jiaqing, Huang Huanbin, Peng Chengjun, Wen Yang

机构信息

School of Mechanical Engineering, Inner Mongolia University of Science and Technology, Baotou, 014010, China.

School of Civil Engineering, Inner Mongolia University of Science and Technology, Baotou, 014010, China.

出版信息

Sci Rep. 2025 May 25;15(1):18214. doi: 10.1038/s41598-025-01932-0.

DOI:10.1038/s41598-025-01932-0
PMID:40414925
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC12104333/
Abstract

This study analyzes the split spherical node concrete-filled steel tube wind turbine plane towers with web member wall thicknesses of 3 mm (TJ-1) and 5 mm (TJ-2) through low-cyclic reversed load tests, comparing their hysteresis curves, skeleton curves, ductility, and stiffness degradation. The analysis is further validated using ABAQUS software simulations, exploring the impact of web member diameter ratios on the damage of the plane towers. The results indicate that the failure modes of the split spherical node concrete-filled steel tube wind turbine plane towers include weld tearing failure, web member buckling failure, and high-strength bolt pull-out failure. The yield load and peak load of specimen TJ-2 are 9% and 21% higher than those of specimen TJ-1, respectively, with a more plump hysteresis curve and better energy dissipation capacity. Increasing the web member wall thickness can enhance the initial and overall stiffness of the tower. The parametric analysis of the web member diameter ratio suggests that a ratio of 0.11-0.13 is recommended for engineering applications.

摘要

本研究通过低周反复加载试验，对腹杆壁厚为3毫米（TJ - 1）和5毫米（TJ - 2）的剖分球节点钢管混凝土风力发电机平面塔筒进行分析，比较其滞回曲线、骨架曲线、延性和刚度退化情况。利用ABAQUS软件模拟进一步验证该分析，探究腹杆直径比对平面塔筒损伤的影响。结果表明，剖分球节点钢管混凝土风力发电机平面塔筒的破坏模式包括焊缝撕裂破坏、腹杆屈曲破坏和高强度螺栓拉拔破坏。试件TJ - 2的屈服荷载和峰值荷载分别比试件TJ - 1高9%和21%，滞回曲线更饱满，耗能能力更好。增加腹杆壁厚可提高塔筒的初始刚度和整体刚度。腹杆直径比的参数分析表明，工程应用中建议采用0.11 - 0.13的比值。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/27dd/12104333/9517f8b9015b/41598_2025_1932_Fig14_HTML.jpg
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