Data collected from shake table tests of two, approximately one-third scale, two story flat plate frames utilizing shear reinforcement, as well as data from prior tests, were evaluated to assess the inter-story drift ratios when punching failures occur for reinforced concrete and post-tensioned slab-column connections with and without shear reinforcement. The drift ratios at punching for the sh...

The present study describes the structural performance of a soft-first-story column-beam joint with mechanical anchorage column longitudinal rebar. A new strengthening method using reinforcement is presented to prevent brittle failure in this type structure. series static loading tests was conducted two scaled models representing above verify effectiveness proposed strengthening. test results c...

To study the effects of infill wall on progressive collapse resistance reinforced concrete (RC) frames with slabs, a macro finite element (FE) model was built using general purpose software OpenSees. The FE validated by existing test results. Then, subsequently used to predict potential eight-story RC frame including slabs and walls. numerical studies demonstrated that inclusion walls could inc...

Top-and-seat angle connections are a conventional type of steel moment connection. However, their capacity in accommodating columns loss is rarely studied. In this study, five multistory subframes using top-and-seat were fabricated and tested to investigate performance while subjected various column-removal scenarios, including: (1) middle column loss, (2) penultimate (3) corner loss. Moreover,...

A mainshock is usually accompanied by a group of ground motions. In many design codes, the effects seismic sequences have been neglected or underestimated. Aftershocks can increase structural damage even cause failure. The current study evaluated behavior rehabilitated and as-built reinforced concrete (RC) structure under real scaled mainshock-aftershocks using nonlinear analysis. Verification ...