기존 교각의 FRP 원통관을 이용한 내진보강의 실험연구

The Experimental Study on the Seismic Strengthening Effect of FRP Circular Tube on the Circular Bridge Piers

This paper describes the experimental study on seismic strengthening effect of circular bridge columns with poor lap-splice details using FRP(Fiber Reinforced Plastic) wrapping, The as-built column suffered brittle failure due to the deterioration of lap-spliced longitudinal reinforcement without developing its flexural capacity or any ductility, The strengthening columns using FRP wrapping showed significant improvement in seismic performance due to FRP's confinement effect.