| Title |
Evaluation of Hysteretic Behaviors on RC Beam-Column-Slab Joints |
| Abstract |
If the frame is subjected to large seismic loads, and some deterioration of column strength occurs, it is possible to shift the yeelding from the beams to the columns. Therefore, the ratio of column to beam flexural capacity must be large enough so that hinges form in the beams and not in the columns. But, the influence of floor slabs and different size framing beams is not adequately accounted for in current design procedures. The additional contribution of the slab reinforcement, which is benefical under dead load, can substantially increase the joint shear under lateral loads. Both the increase in joint shear stress are detrimental to joint behavior. And, it is clear that while the joint shear reinforcement did not significantly change the joint behavior, it did force the deformations towards the more desirable mechanisms. The confinement provided by the additional hoops to the column bars in probably the main reason for this improvement in behavior. Five assemblies designed 2/3 csale beam-column-slab joint and tested to investigate seismic behavior of the beam-column joints on monolithic slab and joint transverse rebar. |