Recent developments in soil-structure interaction studies through shaking table tests are based on solid understanding of the mechanics of models. One principle in the mechanics of models concerns material behavior of soil and structure, and the other concerns the mechanics of soil-structure systems such as equilibrium and mass balance. THe paper points out the importance to differentiate soil-structure interaction in cyclic mobility regime from that in strain softening regime. The two principles of mechanics of models lead to a set of scaling relations. Soil-structure interaction studies on a gravity quay wall and a pile-supported wharf reviewed in this paper indicates that shaking table tests, if carefully performed, have a potential to be a powerful means to study the performance of complicated soil-structure interaction problems.
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