THE CHARACTERISTICS OF ASPHALT-BASED MATERIAL FOR THE SEISMIC ISOLATION APPLIED TO THE UNDERGROUND STRUCTURE

Abstract

It is one of the methods in which the stress which arises in the earthquake is reduced to install the layer with low-rigidity and high shearing deformation performance around the underground structure.
The property of the developed asphalt-based seismic isolation was shown. And, It was proven that not only rigidity ratio of seismic isolation layer and ground but also that of structure and ground caused large effect by the numerical simulation.
The field test for actual operation was carried out, and a constructive knowledge was obtained.