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苏联“磚石双曲拱顶設計及施工規程”中,规定了拱軸线及拱波内腹孤线均采用悬鍵錢,但对它的計算公式是用近似法进行的。从某些例题演算的結果来看,近似法不能使人滿意。为了使这一問题得到进一步的解决,本文首先以一个数表来使求解悬鏈方程数值解的工作极度简化,升达到足夠的精度。其次推出拱波断面几何量及等截面两鉸拱椎力公式的文字解、利用数表来簡化求数值解的工作。文中用例题与近似法作了比较。
In the Soviet Union’s “masonry double-curvature vault design and construction regulations”, it is stipulated that the arch axis and the arched wave inner belly line are all made of dangling bonds, but its calculation formula is performed by an approximate method. From the results of some example calculations, the approximation method is not satisfactory. In order to further solve this problem, this paper first uses a numerical table to simplify the work of solving the numerical solution of the catenary equation and achieve sufficient accuracy. Secondly, the textual solution of the geometrical quantity of arch wave cross-section and the formula of two-articulated arches with equal cross-section is introduced, and the numerical table is used to simplify the work of numerical solution. This article compares example questions with approximations.