单向模拟地震振动台设计中的若干问题讨论

Discussion on a Number of Problems in Design of the Unidirectional Shaking Table

本文讨论了确定单向模拟地震振动台的主要技术参数的方法,较系统地讨论了对支承系统、侧面导向系统和台面结构等的要求,指出交叉十字形钢板弹簧支承系统是单向振动台结构的优良方案.并在振动台基础处理上,提出应注意基础的几体形状,以增大几何阻尼,从而有效地降低共振时的基础振幅.

In this paper, the method of determinting the parameters in design of unidirectional shaking table is presented. Based on the author's experience in the design of shaking table, the problems, such as the bearing units, the side guide system and the structure of the table itself are discussed. The author concludes that the crossed plate used in the bearing system of the table is a satisfying solution in the design of unidirectional shaking table, and points out that the shape of the foundation should be carefully selected to increase the geometric damping and decrease the amplitude of the fundation in case of resonance.