导出了地基土层的动能、势能及该土层的等效质量、等效刚度、等效阻尼系统，从而对于具有弹性地基及联合基础的多层隔振系统提出了一种动力学建模的新方法．该方法能较简便地将弹性地基等效为一个附加在原基础之下的质－弹－阻隔振层，从而将这一复杂的隔振系统的动力学建模问题转化为一般的多层隔振系统的动力学建模问题． The kinetic energy, potential energy of the soil layer, the equivalent mass of the soil layer, the equivalent stiffness and the equivalent damping system were derived. A dynamic modeling was proposed for a multi-layer vibration isolation system with elastic foundation and joint foundation. new method. This method can easily equivalent the elastic foundation as a mass-elastomer-damper layer attached under the original foundation, thus transforming the dynamic modeling problem of this complex vibration isolation system into a general multi-layer vibration isolation. System dynamics modeling problem.