抄録
Here is presented a new analytical technique for the response analysis of soil-hysteretic structural systems subjected to earthquake-like white base motions. This technique was developed by making use of the "Dynamical Ground Compliance" concerning the rectangular foundation resting on the elastic-half space and the markov-vector approach concerning the random response analysis of hysteretic systems. Some computational results showed that this technique was sufficiently applicable to the problem of soil-structural systems with severe non-linearity. From comparative discussions on computational results, it was found that soil-structure interaction had favorable effects on the responses of hysteretic systems which had relatively weaker nonlinearity due to the increasing dispersive damping accompanied by the softening stiffnes phenomenon of soils, while it had rather unfavorable effects on those which had relatively stronger nonlinearity due to the amplifing selective chracteristics of the systems on the lower frequency portions of the energy of earthquake excitations. This tendency became more pronounced with the longer duration and higher amplitude level of random earthquake excitations.
