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以陕西土样的击实试验为基础,利用Origin绘制击实曲线,通过读取顶点的坐标值,求得最佳含水率和最大干密度。使用大量实验数据比较发现,使用Origin对数据进行多项式拟合、高斯拟合、洛伦兹拟合、对数正态拟合,所得的曲线均符合《公路土工试验规程》中对击实曲线的要求,并以校正决定系数作为误差判断标准,进一步比较提出对数正态拟合误差最小,最为接近。
Based on the compaction test of Shaanxi soil samples, Origin was used to draw the compaction curve. The optimal moisture content and the maximum dry density were obtained by reading the coordinates of the vertices. Using a large number of experimental data, it was found that using Origin to perform polynomial fitting, Gaussian fitting, Lorentz fitting and logarithmic normal fitting, the curves obtained are in accordance with the “Computation of Highway Compaction Test” Requirements, and to determine the coefficient of correction as the error criterion, and further comparison proposed logarithmic normal fitting error minimum, the closest.