论文部分内容阅读
建筑施工中,制作天圆地方是铆工、白铁工经常遇到的活计,这里就各类天圆地方的展开加以概括的归纳,以便学习掌握。天圆地方是用三角形法展开的。也就是说,把天圆地方表面的各个部位用若干个三角形依次划分开。天圆地方展开的关键在于找出各个三角形的三边实长线。这三边实长线来自天圆地方的三个方面:首先,最明显的一个方面实长线是有关图中给定的天圆地方上的地方部分的正方形或长方形的各边尺寸的长度。其次,另一方面实长线在天圆地方的天圆部分。也就是把天圆分成若干等份,实长为小于实际长度
In the construction of the building, making TianChang place is a livelihood often encountered by riveters and white ironworkers. Here, the development of all kinds of TianChu places is summarized and summarized so as to learn and master. Tianyuan places are developed using triangles. In other words, each part of the surface of the sky circle is divided by a number of triangles. The key to the development of the Tianyuan region is to find out the three long real lines of each triangle. This three-sided real line comes from three aspects of the Tianyuan area: First, the most obvious one is the length of the dimensions of the square or rectangle on the local part of the circle given in the figure. Second, on the other hand, the actual long line is in the sky circle part of Tianyuan. That is, the sky is divided into several equal parts and the actual length is less than the actual length.