Abstract

Info

Title:: Simulation Analysis of Progressive Collapse of Reinforced Concrete Frames

Author(s):: ZHOU Yuan; LI Fu-yong; WANG She-liang; School of Science, Chang’an University

Keywords:: ABAQUS; RC frame structure; progressive collapse; mechanical characteristic

Abstract:: In order to study the force mechanism of continuous collapse of reinforced concrete frame structures, finite element software ABAQUS was used to simulate the process of continuous collapse of reinforced concrete frame structures based on prism failure test. In the process of simulation, considering that there was almost no failure in the ground beam and diagonal area when prism was failure,reinforced concrete slab was established only in the prism area in modeling process. At the same time, considering that the displacement loading method was simple and the model was easier to astringe, the displacement control was used to simulation collapse. The force displacement curves of structure,the displacement curves of framework, the curves of steel and concrete stress and failure patterns were got, and the simulated results were compared with the test results. The results show that the simulated results and the test results are in basic agreement. When the prism is failure, the framework experiences the elastic stage, formation stage of plastic hinges and failure stage. The simulation can better simulate the process of continuous collapse of the model, and reveals mechanical characteristics under collapse.