UPLIFT BEARING CAPACITY AND DESIGN APPROACHES OF CLIP CONNECTIONS JOINTS IN PROFILED STEEL SHEET ROOF INTEGRATED SOLAR ARRAYS UNDER WIND LOADS

Wu Hanheng; Xing Zixuan; Wang Tao; Zhou Cong; Wang Li

doi:10.19912/j.0254-0096.tynxb.2024-0707

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Acta Energiae Solaris Sinica ›› 2025, Vol. 46 ›› Issue (8) : 7-17. DOI: 10.19912/j.0254-0096.tynxb.2024-0707

UPLIFT BEARING CAPACITY AND DESIGN APPROACHES OF CLIP CONNECTIONS JOINTS IN PROFILED STEEL SHEET ROOF INTEGRATED SOLAR ARRAYS UNDER WIND LOADS

Wu Hanheng¹, Xing Zixuan¹, Wang Tao¹, Zhou Cong², Wang Li²

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Abstract

In order to study the uplift bearing capacity and design approaches under the uplift wind pressure of the clip connections of the profiled steel sheet roofs integrated solar arrays, the clip loading device is designed in this paper. Static tensile tests are performed to obtain the failure mode, bearing capacity and load-displacement curves of the clip connections. The pulling capacity of the button clips is 1.96 times that of the seam clips. The substructure model uplift tests of photovoltaic module-profiled steel sheet-clip connections-purlins loading by vacuum suckers is conducted to reveal the failure mode of substructure and analyze the tensile forces of clips and their distributions. It is found that the distribution of clip tension is in a non-uniform state, with the non-uniformity coefficient ranging from 1.22 to 1.31. A numerical analysis model for the profiled steel sheet roof integrated solar arrays is established using the structural finite element analysis software ABAQUS. The distribution of clips tension is investigated further. Combine the results of experiments and numerical simulation analysis, it is recommended that the non-uniformity coefficient is taken as 1.3. Referring to allowable stress method, the design approach of the clip connections of the profiled steel sheet roof integrated solar arrays has been proposed.

Key words

photovoltaic module / steel sheet / wind effects / clip connections joint / design approach

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Wu Hanheng, Xing Zixuan, Wang Tao, Zhou Cong, Wang Li. UPLIFT BEARING CAPACITY AND DESIGN APPROACHES OF CLIP CONNECTIONS JOINTS IN PROFILED STEEL SHEET ROOF INTEGRATED SOLAR ARRAYS UNDER WIND LOADS[J]. Acta Energiae Solaris Sinica. 2025, 46(8): 7-17 https://doi.org/10.19912/j.0254-0096.tynxb.2024-0707

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