三次曲线回归模型在确定挖方路基横断面面积中的应用

Application on cubic curve regression model in determining the cross-sectional area of excavated subgrade

针对前期方案设计或可行性研究报告阶段挖方路基土石方计算误差大的问题,提出了改进方法,即通过三次曲线回归模型,建立了山体自然横坡平均坡度与挖方路基横断面面积的关系,从而计算挖方路基土石方。通过实例验证了该法比传统经验法更精确,使得挖方路基土石方工程量更符合实际,为其他工程提供借鉴。

In view of the large calculation error of excavated subgrade earthwork in the stage of preliminary scheme design or feasibility study report,an improved method is proposed.Through the cubic curve regression model,the relationship between the average slope of natural cross slope of mountain and the cross-sectional area of excavated subgrade is established,so as to calculate the excavated subgrade earthwork.Through examples,it is verified that this method is more accurate than the traditional empirical method,which makes the earthwork quantities of excavated subgrade more in line with the reality,and provides reference for other projects.