비보강 조적벽체의 손상정도와 고유진동저하율에 관한 실험적연구

Relation Between Damage of Unreinforced Masonry Walls and Their Natural Frequency

The objective of this study is to evaluate residual seismic capacity of Unreinforced Masonry(URM) walls which were damaged by earthquake through the measurement of frequency. Three URM walls which made the shape ratio(1/h, 1.0, 1.5, 2.0)to be a variable were tested for the objective. It was seen that the natural frequency decreased with growing at rotation angle. Also, this study found out that residual seismic capacity and natural frequency of URM walls is correlative.