Finite element research on anti-seismic property of precast reinforced concrete frame with damped joint of beam and column

Abstract

To research the anti-seismic performance of prefabricated concrete structures with damped beam-column joints, several different types of finite element patterns were set up by ABAQUS finite element software. The analysis of the low-cycle repeated loading test was conducted. This paper mainly studied the lose efficacy mode, hysteresis loop, skeleton curve, drawability, rigidity degeneration, and energy consumption ability of a prefabricated concrete frame with a damped beam-column joint. It discussed the influence of different forms of filling materials and axial pressure ratio on their seismic performance. The results showed that the rubber hardness had a minor effect on the nonlinear mechanical properties of the frame. The larger the axial pressure ratio is, the greater the bearing ability of the damping frame is. The smaller the stiffness degradation is, the lower the ductility performance is. When the axial pressure ratio is small to a certain numerical value, the frame lose efficacy will change. The prefabricated frame with a damped beam-column joint has good seismic performance.