Seismic Evaluation Results and Damage of Existing RC Buildings Suffered by The 2011 off the Pacific coast of Tohoku Earthquake

Abstract

Some of existing low earthquake resistant RC buildings were severely damaged by The 2011 off the Pacific coast of Tohoku Earthquake. The objective of this study is to evaluate the structure performance and the damage levels of the existing RC buildings damaged by the earthquake in Ibaraki. By comparing observed damage levels with results of seismic evaluation method, it was confirmed that the seismic performance was influenced by concrete strength decrease due to shoddy workmanship and concrete block wall.