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随着科学技术的发展,在我们建筑设计领域中,采用了许多新的结构,随之出现了许多新的天然采光形式。在这些新的采光形式中,有一些是我们以往所不太熟悉的,有必要对各种采光口的天然采光计算方法进行一些探讨,以适应工作的需要。这类计算方法很多,这里仅介绍立体角投射图表的作法及其应用。 一、立体角投射图表的制作原理 立体角投射图表是应用立体角投射的法则制作的,将天空半球分割成若干网格,并将这些网格作成水平投影。在计算各种形式采光口对O点(即测点P)的天然照度系数时,只要将通过O点的采光口在天空的成象
With the development of science and technology, many new structures have been used in the field of architectural design, and many new forms of natural light have emerged. Among these new forms of lighting, some of them are not familiar to us in the past. It is necessary to conduct some discussion on the natural lighting calculation methods of various lighting outlets to meet the needs of the work. There are many methods for this kind of calculation. Here we only introduce the practice and application of solid angle projection charts. First, the production principle of the solid angle projection chart The solid angle projection chart is produced using the principle of solid angle projection, the sky hemisphere is divided into several grids, and these grids are made into a horizontal projection. When calculating the natural illuminance coefficient of various forms of the daylight entrance to point O (ie, measuring point P), as long as the image of the daylight passing through the point O is in the sky,