The Influence of Material Hysteretic Property on Seismic Collapse-Resistant Capacity of RC Frame Structure

Abstract

To study the influence of hysteretic behavior of material on the seismic collapse-resistant capacity of reinforced concrete frame structure, a 5-story plane frame was selected as the research object, the incremental dynamic analysis method was used to analyze the collapse vulnerability of the structure. According to the collapse probability curve, the seismic collapse-resistant capacity of the RC frame structure with different hysteresis parameters was quantitatively evaluated. The research shows that the concrete strength grade has the most significant influence on the seismic collapse- resistant capacity. Reducing the concrete strength degradation or increasing the strain hardening rate of the steel can slightly improve the seismic collapse-resistant capacity ability; The concrete hysteresis pinch and the steel hysteresis energy consumption has no effect on the seismic collapse-resistant capacity of the structure. The seismic collapse-resistant capacity of the structure is negatively correlated with the strength grade of the steel bar, but its impact is not obvious.