초록
The focus of study is to improve the seismic resistance and load-carrying capacity of reinforced concrete wide beam-column joints. A series of experiments on performances of reinforced concrete wide beam-column joints with several strengthening methods by applying steel plates were conducted under different conditions. The conclusion is as follows. Reinforced specimens and standard specimens for the comparison of experimental results, reinforcing the strength of the specimens about 2.7~30.9 %, 0.5~36.0 % degree of stiffness and energy dissipation capacity of 1.5~18.5 % accuracy, Shear of beams and columns 0.3~802.3 % higher than the degree subject was based. In comparison of the ductility, strengthened specimens showed relatively larger deformation of yield point. It was judged that the ductility of strengthened specimens didn't change or decreased to compare with the standard specimens. To sum up the experimental results, the strengthened specimens have improved performances in terms of load-carrying capacity, member stiffness and energy dissipation capacity, it was concluded that the internal strengthening method of reinforced concrete wide beam-column joints by applying steel plates gave excellent in the improvement of the joint under seismic loads.