ANALYSIS ON MECHANICAL PROPERTIES OF PREFABRICATED BEAM-COLUMN-CORBEL COMBINED JOINTS

In order to improve the assembly efficiency of structure members, a new type of prefabricated beam-column-corbel combined joint in industrial structures was proposed. RC column corbels were welded with steel bars which would inserted into the reserved holes on beams during installation, and between the columns and beams, foam blocks were filled, which were sealed with epoxy, and grouted with M7.5 non-shrink mortar between epoxy blocks and beams. A finite element model of the combined joint was established by ABAQUS and simulations of mechanical properties was performed. The failure mode, bearing capacity, ductility and energy dissipation capacity were simulated. The results showed that the hysteretic curves of the joints were full and round that was to be of good ductility and energy dissipation capacity. Main failure occurred at the beam ends, in which the plastic hinge was formed finally, meeting to the design principles of "strong columns and weak beams"and "strong joints and weak members".