근입깊이에 따른 콘크리트 교각의 동특성 변화에 관한 실험적 연구

An Experimental Analysis on the Pier Dynamic Property Change with Penetration Depths

This study was performed to verify the possibility of the integrity estimation of the bridge substructure focusing on the dynamic property change of concrete pier with penetration depths using experimental modal analysis. As a result of the impact vibration test, it is found that scour reduces the stiffness of the foundation, and measurement the accelerance residue and natural frequency can be used for the estimation of the integrity index.