Abstract
This paper introduces an idea of controlling a shaking table so that soil-structure interaction effect is incorporated. In order for the interaction effect to be reflected in a shaking table test, the signal equivalent to the soil-structure interaction motion is added to the input base motion. It is shown herein that a variety of flexibility functions of bases or soil mediums overlaid with structures are closely approximated by rational functions of imaginary circular frequency, s, . These rational functions are easily simulated by means of analog circuits. To all intents and purposes, an analog circuit loses no time in responding to its input signal. This method thus has the potential to be applied to a variety of experiments of soil-structure interaction without preparing any physical soil model.
