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论文:2023,Vol:41,Issue(5):950-959 |
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引用本文： |
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闻洋, 徐广茂, 李兆建. 钢管砼分体球型节点风电平面塔架的损伤分析[J]. 西北工业大学学报 |
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WEN Yang, XU Guangmao, LI Zhaojian. Damage mechanism analysis of concrete-filled steel tube (CFST) spherical joint wind turbine plane tower[J]. Journal of Northwestern Polytechnical University |
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| 钢管砼分体球型节点风电平面塔架的损伤分析 |
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| 闻洋, 徐广茂, 李兆建 |
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| 内蒙古科技大学 土木工程学院, 内蒙古 包头 014010 |
| 摘要: |
| 为研究钢管砼格构式分体球型节点风电平面塔架在地震作用下的破坏形态及损伤机理,对二榀以腹杆壁厚为参数的平面塔架进行低周反复荷载试验,分析其滞回曲线、骨架曲线等。同时通过ABAQUS有限元模拟对其进行验证对比,并在此基础上对腹杆管径比进行参数拓展分析。结果表明:塔架的破坏特征包括焊缝撕裂破坏、腹杆屈曲破坏和腹杆高强螺栓拉出破坏3种类型;增加腹杆壁厚可使塔架的滞回曲线更加饱满,耗能能力更强;塔架的极限承载力和延性系数均与腹杆管径比呈正相关变化,当腹杆管径比大于0.13时,极限承载力和延性系数的增幅均明显下降。为最大程度发挥塔架整体的受力性能,同时提高其经济性,在实际工程应用中,此类塔架的腹杆管径比宜取0.11~0.13。 |
| 关键词:
钢管混凝土
风电塔架
分体球型节点
损伤机理
有限元分析
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| Damage mechanism analysis of concrete-filled steel tube (CFST) spherical joint wind turbine plane tower |
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| WEN Yang, XU Guangmao, LI Zhaojian |
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| School of Civil Engineering, Inner Mongolia University of Science Technology, Baotou 014010, China |
| Abstract: |
| In order to investigate the failure modes and damage mechanism of the concrete filled steel tubular latticed planar wind turbine tower with split spherical joints under earthquakes, the low cyclic loading tests were carried out on the two plane towers with web wall thickness as parameters, and their hysteresis curves and skeleton curves were analyzed. At the same time, it is verified via ABAQUS finite element simulation, and based on this analysis, the parameter expansion analysis of the web diameter ratio was carried out. The results indicate that the failure characteristics of the tower include three types: weld tear failure, web member buckling failure and web member high-strength bolt pull-out failure; to increase the thickness of the web member can make the hysteresis curve of the tower fuller and the energy dissipation capacity stronger effectively. The ultimate bearing capacity and ductility coefficient of the tower are positively correlated with the diameter ratio of web members. When the diameter ratio of web members was greater than 0.13, the increase in ultimate bearing capacity and ductility coefficient reduced obviously. In order to maximize the overall mechanical performance of the tower and improve the economy, in practical engineering applications, the diameter ratio of the web member of such towers should be taken as the range of 0.11~0.13. |
| Key words:
concrete filled steel tube
wind power tower
split spherical node
damage mechanism
finite element analysis
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| 收稿日期: 2022-11-04
修回日期:
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| DOI: 10.1051/jnwpu/20234150950 |
| 基金项目: 国家自然科学基金面上项目(51768056)与内蒙古自治区自然科学基金(2019MS05038)资助 |
| 通讯作者: 徐广茂(1996—),内蒙古科技大学硕士研究生,主要从事钢与混凝土组合结构及风电塔架研究。e-mail:15935274660@163.com
Email：15935274660@163.com |
| 作者简介: 闻洋(1976—),内蒙古科技大学教授,主要从事钢与混凝土组合结构及风电塔架研究。
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| 作者相关文章 |
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| 闻洋 在本刊中的所有文章 |
| 徐广茂 在本刊中的所有文章 |
| 李兆建 在本刊中的所有文章 |
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