An Experimental Study on the Improvement of Flexural Capacity of Reinforced Concrete Shear Wall Using Carbon Fibers

탄소섬유를 사용한 철근콘크리트 전단벽의 휨성능 개선에 관한 실험연구

An experimental work is presented to evaluate the retrofit method for improving the flexural capacity of shear walls. Fives shear wall specimens are designed and retrofitted by using carbon fiber materials such as rod, sheet and plate. Cyclic horizontal loads are applied to the specimens under constant axial load, $0.1f_{ck}A_g$. Test result shows that specimens with additional flexural reinforcement have the increased initial stiffness and deformation capacity. However, the strength is not improved as much as expected. This is because that the flexural reinforcement is pulled out from the foundation at the latter half of cycles. In order to maximize the flexural retrofit, therefore, it is required to study the anchorage behavior of the flexural reinforcement for retrofit.