Seismic retrofit of reinforced concrete buildings in Japan using external precast, prestressed concrete frames

摘要

>Two external types of precast, prestressed concrete seismic retrofit methods were applied in two school buildings in Miyagi prefecture, which was strongly affected by the Tohoku earthquake of March 11, 2011. Following the earthquake, inspection showed no damage other than small cracks in the retrofitted buildings. The paper describes how the calculations were performed and the basic construction procedures.