DAMAGE MECHANISM OF GYMNASIUM BUILDING WITH RC FRAME AND STEEL ROOF DAMAGED BY THE 2011 TOHOKU EARTHQUAKE

Abstract

This paper presents the damage mechanism of gymnasium building with RC frame and steel roof structure damaged by the 2011 Off the Pacific Coast of Tohoku Earthquake. The result of pushover analysis reveals that the damage at top of column progresses from the frame with seismic walls to the moment resisting frame. Furthermore, the damages at top of column around the frame with seismic walls are confirmed by seismic response analysis. Additionally, the cause of the difference between push over analysis and seismic response analysis is investigated in terms of the distribution of external forces and shear forces at the top of column.