2025 Volume 25 Issue 2 Pages 2_74-2_85
The impact of large earthquakes on super high-rise buildings and seismically isolated buildings are concerned. A response displacement at the isolation layer may exceed the assumed clearance and is difficult to reduce increasing the number of dampers if the long-period pulse observed in the 2016 Kumamoto earthquake were to strike an isolated building. We have developed a fail-safe system for the isolation layer that consists of stoppers and molded rubber shock absorbers. This paper describes the characteristics of molded rubber shock absorber, the results of performance tests of fail-safe system and effect of fail-safe system obtained by response analysis.
