土地平整中土石方量计算的三角网格法

采用三角网格划分平整地块,根据土体的实际形状建立挖填方量计算多面体模型,避免了传统的方格网法计算中把多面体近似作为柱体存在的误差。工程实例计算结果表明,方格网法计算的挖填方差值为36.84 m3,而三角网格法计算的挖填方差值仅为0.01 m3。此外,应用编写的可视化计算软件,提高了计算效率和计算结果的准确性。

Triangular meshes method for land leveling earthwork calculation

The land area was divided into several triangular meshes,and a polyhedral model for earthwork calculation,which adapts to the actual topographic condition,and can preclude calculation error of the conventional square mesh method was developed.Calculation results of a practical project show that the variances of earthwork volume calculated with the square mesh method and the triangular mesh method are 36.84 m3 and 0.01 m3,respectively.Finally,it is pointed out that the application of a visualized calculation program compiled in this paper could improve the efficiency and accuracy of earthwork calculation.