Abstract
In this experimental study of continuous collapse of reinforced concrete frame structure, the authors design a 2*2 layer of reinforced concrete frame model and simulate the continuous collapse process of frame structure with the pseudo static test method, and hybrid control force and displacement loading method. While the Angle collapsed failure process and plastic hinge form development are observed, the date on resistance, reinforcement and concrete strain is collected and the characteristics of resistance to the continuous collapse of reinforced concrete frame structure is analyzed. By using ABAQUS finite element software to simulate the process of continuous collapse of reinforced concrete frame structures prism failure, resistance curves are spotted and are compared with the experiment result, and the congruency identified between them shows that the simulation can better simulate the process of continuous collapses of the model. On the basis of the corner posts failure simulation, the progressive collapse process is simulated and analyzed with ABAQUS when the reinforced concrete frame structural long side of the column are failure, and accordingly what is discussed is the collapse of the force during the conversion mechanism. The simulation results also show: Firstly, that during the conversion process of column failure, framework has gone through three stages ranging from the elastic stage, the stage of formation of plastic hinge, to the stage of concrete damage and suspension cable; Secondly, the beam in frame failure area has experienced the conversion process by bending to the suspension cable to provide continuous collapse resistance.
