将半无限地基分为远域和近域，分别用超参映射动力无穷元和普通有限元模拟，提出一种上部结构与地基之间的耦合单元，从而建立了该系统的数值分析模型。基于该模型，分析研究了地基远域、地基与结构的弹模比、结构高宽比、以及输入方式对该系统动力特性的影响。计算结果表明：这种影响是明显的。 The semi-infinite ground is divided into far and near domains. Using the hyperparametric mapping dynamic infinite element and ordinary finite element simulation, a coupling unit between the superstructure and the foundation is proposed, and the numerical analysis model of the system is established. Based on this model, the influence of the elastic modulus ratio, the aspect ratio of the structure, and the input method on the dynamic characteristics of the foundation were analyzed. The calculation results show that this effect is obvious.