Seismic performance of RC piers with partial lap-spliced longitudinal bars under different loading conditions

소수겹침이음을 갖는 중실단면 교각의 하중변화에 따른 내진성능

It is well known that RC piers having 50% of lap-spliced longitudinal bars in plastic hinge region have a good ductility relatively. But the deformability under various loading condition is not confirmed. In this study scale models with different confinement were tested under different axial loads and loading cycles. It was confirmed that deformability was decreased with increase of axial force and number of loading cycles and that the models having 75% of confinement specified in present code satisfy the required seismic performance.