Seismic response of reinforced concrete moment resisting frames of beam-column joint yielding

Abstract

The results of nonlinear dynamic analysis on the seismic response of reinforced concrete moment resisting frames in which beam-column joints are damaged are reported. In the analysis, beam-column joints are modeled with the simplified macro-element ofbeam-column joints to simulate the nonlinear behavior after the yielding of beam-column joints. The analytical results indicate that yielding of beam-column joints, which occurs in the beam-column joints with low column-to-beam strength ratio, induces the storycollapse mechanism. The seismic acceleration levels of collapse are lower than the case of beam-column joints which do not yield.