Mechanical analysis and design of large building integrated photovoltaic panels for a seamless roof
Mechanical analysis and design of large building integrated photovoltaic panels for a seamless roof
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无缝屋顶大型建筑一体化光伏板的力学分析与设计
DOI：
10.1016/j.solener.2022.12.045
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发表时间：
2023
期刊：
影响因子：
6.7
通讯作者：
Yin, Huiming
中科院分区：
文献类型：
--
作者：
Teka, Linda G.;Zadshir, Mehdi;Yin, Huiming
大型光伏建筑一体化（BIPV）板在面荷载作用下，由于板厚小、跨度大，板的大挠度往往成为结构设计中的控制因素。为了减少挠曲，需要厚玻璃板来提供足够的抗弯刚度，这增加了静载荷，从而导致设计效率低下。本文研究了一种新的加强机制，通过施加水平约束沿着的支持边缘，这是需要尽量减少差距板之间的泄漏控制和建筑围护结构的寿命延长。在板表面施加横向载荷的情况下，水平约束将减小板中心的挠度，建立了板中心挠度的控制方程，并针对不同的边界条件，推导了相应的解。对于一个大型的BIPV面板，两个相对的边缘上的简单的支持与线性水平约束，面板的挠度可以预测的非线性弹性理论，这与以前的实验吻合得很好。将该模型推广到其他边界条件，结果表明，对固支板施加水平约束可以进一步减小板的挠度，从而使板变薄。本公式可用于BIPV系统的设计和分析。提出了一种新的BIPV安装系统的基础上，目前的理论提供可剪裁的刚度和板间隙的自适应控制的BIPV系统的寿命。
When a large building integrated photovoltaic (BIPV) panel is subjected to surface loading, due to the small thickness and large span of the building pane, the high transverse deflection often becomes the control factor in the structural design. To reduce the deflection, thick glass sheets are required to provide sufficient flexural rigidity, which increases the dead load thereby leading to inefficient design. This paper investigates a new stiffening mechanism for BIPV panels by imposing horizontal constraints along the supporting edges, which is required to minimize the gap between panels for leakage control and lifetime extension of the building envelope. Given a transverse load on the panel surface, the horizontal constraint will reduce the deflection at the center of panels, a new governing equation is formulated and the solution is derived for different boundary conditions. For a large BIPV panel with simple supports on two opposite edges with a linear horizontal constraint, the deflection of the panel can be predicted by the nonlinear elastic theory, which aligns well with the previous experiments. The model is extended to other boundary conditions and shows that the horizontal constraint on clamped panels can further reduce the deflection, which results in making the BIPV panels thinner. The present formulation is useful in the design and analysis of BIPV systems. A new BIPV mounting system based on the present theory is proposed to provide tailorable stiffness and adaptive control of the panel gap for the longevity of the BIPV systems.
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影响因子：
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