新型屋顶光伏支架基础简化计算设计方法

Simplified Calculation and Design Method of New Roof Photovoltaic Support Foundation

为了解决在一些薄板和对裂缝要求比较高的建筑物屋面板做屋顶分布式光伏,文章提出对光伏支架立柱下增加转换梁,把基础支墩放置在主次梁上的布置形式,并对该新型布置形式提出了二维简化计算方法。运用3D3S三维计算软件,对有转换梁和无转换梁的光伏支架分别进行三维有限元计算。对比二维简化计算方法和三维有限元计算,可知二维简化模型计算结果与三维模型计算结果相接近,满足工程需要,同时,简化计算方法具有计算简便、实用的特点。对比有转换梁和无转换梁的光伏支架三维有限元计算可知,转换梁的使用方便了屋顶光伏的布置,并没用明显增加基础用量。

In order to solve the problem of roof distributed photovoltaic in some thin plates and buildings with high requirements for cracks,this paper proposes to add a transfer beam under the photovoltaic support column and place the foundation pier on the primary and secondary beams.A two-dimensional simplified calculation method is proposed for the new layout.3D finite element calculation was carried out for photovoltaic supports with and without a conversion beam by using 3D3S 3D software.By comparing the two-dimensional simplified calculation method with the three-dimensional finite element method,it can be seen that the calculation results of the two-dimensional simplified model are close to those of the three-dimensional model,which meets the engineering needs.At the same time,the simplified calculation method has the characteristics of simple calculation and practical.By comparing the three-dimensional finite element calculation of photovoltaic support with and without conversion beam,it can be seen that the use of conversion beam facilitates the arrangement of photovoltaic roof,but does not significantly increase the basic consumption.