动力机器基础中地基土的惯性分析

Analysis of the Inertia Effect of Base Soil on Dynamic Machine Foundation

从轴对称问题的波动方程出发，推导出动力机械基础在垂直振动时基础下土体内部的位移，确定出地基土参与基础振动的质量。在考虑了地基土的惯性作用的基础上，计算了动力机械基础的动力特性和动力响应，讨论了一些对参振土质量有影响的因素。

This paper derives the displacement of soil below base from the differential equations of wave propagation for the axial symmetry promble while the machine foundation is at vertical vibration. The mass of base soil participating in vibration is determined. The dynamic response of machine foundation considering the inertia effect of base soil has been computed. Some factors which affect the mass of base soil participating in vibration are discussed.