填充墙分布对RC框架结构抗连续倒塌承载力的影响

o investigate the influence of the infilled wall distribution on the load of progressive collapse resistance of frame structures, integral finite element models of reinforced concrete (RC) infilled wall structures were established based on Abaqus, the rationality of the modeling method and the selection of the constitutive relation were verified by comparison with experimental results. Furthermore, the load-displacement relationship, the relationship between the horizontal displacement of joints and the vertical displacement of columns, the distribution of plastic hinge and the peak load capacity of RC frame structures with different numbers of infilled walls and their distributions were analyzed. The results show that the infilled walls located at the failed column span can significantly improve the load of progressive collapse resistance of frame structures. The distribution of infill walls will change the position of plastic hinges of the frame structure. Additionally, the more inhomogeneous the plastic hinge distribution, the weaker the progressive collapse resistance of structures. In architectural design, it is necessary to avoid the horizontal asymmetric distribution of the infilled walls and the situation that the infilled walls are only distributed at both ends of the floor.