本文包括两部分。第一部分提出了求解基础耦合振动系统固有频率的一个迭代解法,该法运算简单,对一般阻尼振动问题的收敛性很好,适宜于工程计算的应用。第二部分提出了用基础角点位移反应幅值确定基础耦合振动系统参数的分析方法,以免除相角的测量。 This article includes two parts. In the first part, an iterative method to solve the natural frequency of the fundamental coupled vibration system is proposed. The method is simple in operation and has good convergence to the general damping vibration problem. It is suitable for the application of engineering calculations. The second part proposes an analytical method to determine the parameters of the basic coupled vibration system using the amplitude of the basic corner displacement response to avoid the phase angle measurement.