三次样条函数在扭面土石方量计算中的应用

The Application of Cubic Spline Spaces to Earthwork Calculation of Twist Surface

针对现有扭面工程土方量计算的不足,基于MATLAB的强大数学计算功能与友好界面,提出用三次样条函数拟合断面面积函数,运用复合梯形求积公式计算土石方量的新方法,并用实例说明了该方法的应用,结果表明计算过程简单、误差小,可供设计人员参考。

Aiming at the deficiency of earthwork calculation of twist surface, based on the function and interface of MATLAB, a new method is put forward that use cubic spline spaces fitting cross-section area function,and adopt composite-trapezoid integral formula to calculate earthwork with example, the result shows that the calculation is simple and has small error, which can be taken as reference for the designers.