Shaking Table Model Test on the Dynamic Soil-Structure Interaction System

Abstract

Shaking table model tests on dynamic Soil-Structure Interaction (SSI) system are described in this paper. In the design and manufacture of the test modals, the similitude formulas and similitude factors of all physical quantities are studied. Through controlling the ratio between diameter of the container and plan size of the structure, a flexible container is designed and manufactured in order to minimize the box effect resulting from the boundary conditions. The simulation design of the soil boundary is proved to be extremely effective in the present SSI tests. Nine specimens including five pile foundations, three box foundations and one fixed base are designed and made. A single column with mass block at its top and 12-story cast-in-place R.C. frame model are used as superstructure, and Shanghai soft soil is employed as the model soil. Finally, some important findings from the present tests are concluded.