基于TIN模型的土方量计算方法研究及应用

土方量计算是工程项目中经常遇到的问题,快速准确高效地计算土方量对于合理安排工程进度、工程量大小计算和投资预算等具有非常重要的意义.该文介绍了利用GPS接收器获取三维地形点数据,基于TIN模型,运用三棱柱法在ARCGIS中计算填挖土方量的工作方法,并以渑池县红花窝土地开发整理项目为例对计算进行进一步验证.将填挖土方量的计算结果与实际结果相比较,挖方误差约为-4.7％,填方误差约为-1％.研究表明该方法计算土方量是可行的,具有较高的精度和可视化效果,可作为工程土方计算的主要方法.

Research and Application for the Calculating Method of the Earthwork Volume Based on TIN Model

Earthwork volume calculations are often met in the project problems.Quick,accurate and efficient calculating earthwork volume has a very important significance for arranging the project progress reasonably,engineering size calculations and investment budget.Using the GPS receiver to obtain three-dimensional terrain point data and using the triangular prism method in ARCGIS to calculate fill-in and excavation earthwork volume based on TIN model.With Mianchixian Honghuawo Land Development and Consolidation Project as an example to introduce the detailed calculation steps,and fill-in and excavation earthwork volume calculation results are compared with the actual results,the excavation error is about-4.7％ and fill-in error is about-1％.Studies show that the method is feasible for earthwork volume calculations,with high accuracy and visualization that can be used as the main method of earthwork volume calculation.