Structural characteristics of reinforced concrete foundation for seismic isolated nuclear power plants

Abstract

This study focuses on the combination of a seismic isolator and its reinforced concrete foundation (pedestal) designed for use at a nuclear reactor building. A series of static loading tests was carried out by using specimens designed to simulate a realistic combination of a seismic isolator and a pedestal. The test specimens were 1/2 - scaled model, and four specimens were used. The test results revealed the behavior of pedestal under strains up to the rubber breaking level ( shear strain = 450% ) exceeding the limit assumed at the design.