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在水电站压力钢岔管的设计中,需要计算钢板量,这首先必须计算每个管节的展开面积。这种计算过去一般根据管节展开图,并将其划分为由三角形、矩形及梯形组成的若干单元,分别求出这些单元的微面积,再利用求和法算出此管节的近似展出面积。有时,为了达到要求的精度,就必须将展开面积划分得足够细,这种计算方法很繁琐,特
In the design of hydraumatic steel bifurcation pipe, it is necessary to calculate the amount of steel plate, which must first calculate the expansion area of each pipe section. This calculation in the past generally based on the pipe section to expand the map, and divided into several units composed of triangles, rectangles and trapezoids, respectively, to determine the micro-area of these units, and then calculated using the summation of this section approximate display area . Sometimes, in order to achieve the required accuracy, it is necessary to fine-tune the area under development. This method of calculation is cumbersome.