Seismic Behavior of Reinforced Concrete Core Wall under Different Span-Depth Ratio of Coupling Beam

Abstract

Two reinforced concrete core wall models with large height-width ratio were built and tested to failure under the combined action of constant axial load and reversed cyclic lateral load. The span-depth ratio of coupling beam on each core wall was focused on. This paper presents the results, including failure mode, hysteretic behavior, load-carrying capacity, ductility, energy dissipation ability. With the span-depth ratio of coupling beam dropping from 1.7 to 0.9, stiffness and load-carrying capacity of the specimen had risen markedly, but the ductility performance dropped significantly. It can be seen that the span-depth ratio of coupling beam having important effect on the seismic behavior of reinforced concrete core wall.