平单轴光伏跟踪支架多边形主梁抗扭承载性能研究

袁毅

doi:10.13206/j.gjgS24121701

平单轴光伏跟踪支架多边形主梁抗扭承载性能研究

doi: 10.13206/j.gjgS24121701

袁毅

华中科技大学土木与水利工程学院, 武汉 430074

详细信息

作者简介:
袁毅，博士研究生，研究方向为新能源结构开发与设计。Email：75388365@qq.com

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出版历程
- 收稿日期: 2024-12-17
- 网络出版日期: 2026-04-13
- 刊出日期: 2026-02-22

Research on the Torsional Capacity of Polygonal Tubular Main Beams for Flat Single-Axis Solar Trackers

Yi Yuan

School of Civil and Hydraulic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China

摘要

摘要: 平单轴结构的光伏跟踪支架为风敏感结构，风荷载的作用导致支架主梁产生较大的扭矩。美国规范中仅对矩形管和圆管截面进行了设计规定，对多边形管截面在实际工程中的应用却无明确计算依据，且国内规范尚没有钢结构抗扭设计的相关规定。根据壳单元屈曲理论、规范原理、数值模拟的方式对薄壁闭口截面的抗扭承载力进行了分析和对比。结果表明：在满足一定宽厚比条件下，理论计算结果与数值模拟结果基本一致，据此可建立相应的抗扭承载力计算公式。并进一步结合平单轴主梁的受力特点，探讨了其截面优化设计方法。
- 平单轴 /
- 抗扭承载力 /
- 屈曲 /
- 临界应力 /
- 多边形空心截面
Abstract: The flat single-axis photovoltaic （PV） tracker is a wind-sensitive structure， in which wind loads induce significant torsional moments in the main tubular beam. Current design codes， such as the AISC code， provide guidelines only for rectangular and circular tubular sections. However， they lack explicit calculation methods for polygonal tubular sections and offer no specific provisions for torsion design in steel structures （e.g.， in Chinese codes）. This study analyzed and compared the torsional capacity of thin-walled closed sections using shell buckling theory， standardized design principles， and numerical simulation. The results indicated that provided the width-to-thickness ratio requirements were satisfied， the theoretical predictions showed good agreement with the simulation results， based on which corresponding torsional capacity calculation formula was proposed. Accordingly， the cross-sectional optimization design strategies tailored to the characteristics of the flat single-axis tracker’s main tubular beam were explored.
- flat single-axis tracker /
- torsional capacity /
- buckling /
- critical stress /
- polygonal hollow section

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