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关于公路工程中平曲线部分之横断面方向的确定,“公路”杂志上曾经介绍了许多方法,兹将笔者工作中采用的一种方法简介如下,供大家参考。 (一)采用之公式: θ=28.6479×L/R式中:?—曲线内任意一点的切线偏角值(单位以度数计); L—曲线长,如图3中之CD(单位以公尺计); R—曲线半径(单位以公尺计)。 (二)按上式可以求出当曲线长为1公尺时(L=1公尺)不同半径的曲线偏角值,见表或图1所示。
As for the determination of the cross-section direction of the flat curve part in highway engineering, many methods have been introduced in Journal of Highway, and one of the methods used in my work is as follows for your reference. (A) the formula used: θ = 28.6479 × L / R Where:? - Tangential deviation at any point within the curve (units in degrees); L-curve length, as shown in Figure 3, CD Ruler); R-radius of the curve (in meters). (B) According to the above formula can be obtained when the curve length of 1 meter (L = 1 meter) different angles of the curve deflection angle, shown in Figure 1 or Table.