基于CASS的方格网法和DTM法土方量计算比对与分析

Comparison and Analysis of Earthwork Calculation between Grid Method and DTM Method Based on CASS

工程建设过程中常常需要获得准确的土方量,比较和分析了CASS软件中方格网法和DTM法计算土方量的精度随不同参数(方格宽度和边界采样间距)设置的变化情况,计算结果表明,随着方格宽度的增加,方格网法计算土方量的偏差迅速增大,而DTM法受边界采样距离的影响较小,结果可为不同工程条件的土方量计算提供依据。

The calculation of earthwork is a common work in project construction.This paper compares and analyzes the calculation of earthwork derived from grid method and DTM method by setting different parameters(grid width and boundary sampling interval)based on CASS software.The results show that the bias of earthwork derived from gird method increases quickly with the increase of grid width,while DTM method is less impacted by the boundary sampling interval.The results of the study provides basis for calculating earthwork in different project conditions.