抄録
In recent years, some investigations of aseismatic property of typical automated warehouses, especially, the large seals shaking table tests have been carried out, and the results have showed the occurence of slip motion of heavy loads over a certain excitation level which is about 100 Gal. Furthermore, the experiment have made clear that the slip motion of loads bring the remarkable elimination of frame response or the large equivalent damping effect. The main purpose of this study is to explain this effect by means of analytical simulations. The method and results of the study are summarized as follows : 1) The analysis and experiment of one story slip model showed the availability of a model in which static and dynamic friction constants are used. 2) The analytical simulation of multi story slip model agreed well with the experiment, and the method of pseudo force modal superposition have been found to be applicable for a large model analysis. 3) The numerical simulation of a real scale model (Ref. 2) have explained well the result of large scale shaking table test. A simplified estimation method of slip motion effect have been presented in a way of minimum effective input, and the adequacy of that have been roughly showed.
