FROM INFANCY TO MATURITY OFBUCKLING RESTRAINED BRACES RESEARCH

摘要

A brace with a stable force-deflection characteristic and that enables compressive yield strength to equaltensile yield strength was developed in around 1980 in Japan. A core steel plate is jacketed with concreteencased in a steel tube to restrain buckling, and coating materials are used between the concrete and thecore plate to prevent transmission of axial forces. In the following 20 years, buckling-restrained braceshave been studied in many countries and used in many buildings. The origin of buckling restrained bracesis discussed from the viewpoint of rational seismic design theory.