CYCLIC LOAD BEHAVIOR OF GFRP REINFORCED CONCRETE SHEAR WALL: EXPERIMENTAL APPROACH

摘要

With the establishment of several construction applications of FRP reinforcement, there is a need for a system to resist lateral loads induced from wind and earthquake loads in these constructions. Reinforced concrete shear walls have shown effective performance in resisting lateral loads caused by wind and earthquake loads. Therefore, shear walls are frequently used in parking garages and multi-story buildings exposed to high lateral loading. This research involved testing a shear wall totally reinforced with FRP bars. Early information showed the inapplicability of reinforcing shear walls with FRP, but after overcoming the difficulties encountered, the restilts showed an opposite conclusion. The results obtained demonstrated significantly high utilization levels of the shear wall reinforced with FRP in term of drift, deformability, and failure mode. The large scale shear wall experiment was carried out to examine the strength, stiffness and deformability by observing the degradation in stiffness and strength while resisting in plane reversed loading, and to measure the energy dissipation of the system accounting for the deformability of the shear wall. The shear wall specimen was in the medium-rise wall category where both flexural and shear deformations exist. The specimen was totally reinforced with glass FRP bars to resist flexure, shear, and sliding shear deformations.