应用样条半解析法求解粘弹性非均质平面地基上条形基础的动力柔度系数。将地基划分为有限个水平条单元 ,位移函数表示为一次样条函数与 Fourier级数的乘积形式 ,根据复阻尼理论的拉格朗日方程 ,使问题归结为求解若干次低阶复代数方程。数值分析结果表明这一方法具有良好的精度 ,从而为结构与地基的相互作用分析提供了一种有效的分析方法 Solving the Dynamic Susceptibility Coefficient of Strip Foundation on Viscoelastic Heterogeneous Plane with Spline Semi - analytical Method. The foundation is divided into a limited number of horizontal bars. The displacement function is expressed as the product of a spline function and the Fourier series. According to the Lagrange equation of the complex damping theory, the problem is reduced to solving a series of low-order complex algebraic equations. Numerical analysis results show that this method has good accuracy, so as to provide an effective analytical method for the interaction analysis between structure and foundation