SEISMIC UPGRADING AND EXPANSION PLAN OF EXISTING SCHOOL BUILDINGS CONSIDERING ENVIRONMENTAL IMPACT

Abstract

The shortage and aging of the facilities are common problems among national universities in Japan. This paper proposes a seismic upgrading and extension plan of an existing low/mid-rise school building using outer mega-frames which strengthen the existing structure and support extended upper floors at the same time. The possibility of the plan is investigated using seismic response analysis. The feasibility analysis in terms of extra land necessity, possibility of upgrading without evacuation, living environment after upgrading, and cost shows that the proposed plan is superior to constructing a fully new structure and to upgrading the existing structure along with constructing a new one.