Abstract
In the case of a very large test specimen or the test specimen with very strong nonlinearities, it is impossible to perform the seismic excitation tests using even a very large shaking table such as one at Tadotsu. 0ne of the ideas to solve these problems is to install only the main structures and the actuator system on the shaking table and to remove the subsidiary structures. This actuator system is so called "Multiple excitation simulator", which should give the seismic motions equivalent to the removed subsidiary structures to the main structures. The authors have developed a "Multiple excitation simulator" system based on the uni-axial displacement control system, and confirmed the applicability through the various experiments. This report summarizes these experimental data and discussed the effectiveness of this system.
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