Abstract
After a large scale earthquake, damage evaluation of bridge structures is currently conducted by means of visual inspection by bridge experts. So the develop of sensing technique which can detect the damage level of bridge structures promptly and correctly is expected. A new damage evaluation system using advanced sensors just after the earthquake is being developed.
This paper presents the study on the damage evaluation method using the natural period change of the bridge columns, and the effectiveness of the proposed method demonstrated through two series of shaking table tests.