Abstract
The square tubed reinforced and steel reinforced concrete (STRC and STSRC) short columns are ordinary RC and/or SRC short columns where most of the lateral reinforcement is in the form of thin-walled steel tubes. In this study, six specimens of STRC and STSRC short columns were experimentally tested under constant axial compression and cyclic lateral load to investigate the seismic performance of both kinds of structure. The main parameters were the axial load ratio and status of longitudinal reinforcement. Nonlinear 3D finite element model was developed to simulate the monotonic behavior and strength of tested specimens. The behavior and strength of extra assumed specimens were predicted using the developed FEM model. Depending on the test and analysis results, a design formula was proposed to predict the shear strength of STRC and/or STSRC short columns.
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