基于最小二乘法原理的多项式数据拟合在实际工作中有广泛的应用,且计算过程简便。公路平面线形实例设计表明,多项式曲线拟合法用于公路平面线形设计中,与三次样条函数设计计算结果接近,同样能满足路线设计规范(JTJ011-94)的要求,值得在设计工作中参考和应用。

Based on principles of least square method,the polynomial data fitting method is applied in practice widely,and its calculation is simple.The examples indicate that polynomial curve fitting method can be applied to the design of highway horizontal alignment.The polynomial curve fitting applied to design example shows that its results are close to ones by cubic-spline function and meets the criterion′s(JTJ011-94) requirements.It can be used and for reference in practical design of highway′s horizontal alignment.