基于BIM技术的公路工程精细化土方量计算方法研究

Research on the Calculation Method of Refined Earthwork Volume in Highway Engineering Based on BIM Technology

为提高公路工程土石方计算的准确性,借助最新的BIM技术,获取多种格式的地形数据,并将多种格式的地形源数据进行融合、相互修正,最终获取更能反应真实地形的数据,建立高精度的BIM三维地形模型。基于高精度的地形模型和公路设计数据,建立精确的设计模型。通过布尔运算得出精细化的填挖方三维体及准确的土方计算结果。通过四川山区高速公路项目实例,验证了该计算方法可较大幅度提高公路工程土方量计算精度和计算效率。

In order to improve the accuracy of earthwork calculation in highway engineering,the latest BIM technology is used to obtain terrain data in multiple formats,and the terrain source data in multiple formats are fused and mutually corrected,so as to ultimately obtain the data that better reflects the real terrain,and establish the high-precision BIM 3D terrain model.The accurate design model is established based on high-precision terrain models and highway design data.The refined 3D volume of fill and excavation and accurate earthwork calculation results are obtained through Boolean operations.Through the example of a highway project in Sichuan mountainous area,it has been verified that this calculation method can significantly improve the accuracy and efficiency of earthwork calculation in highway engineering.