期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2019
卷号：267
期号：5
页码：1-11
DOI：10.1088/1755-1315/267/5/052066
出版社：IOP Publishing
摘要：Column loss scenarios are often used to investigate progressive collapse resistance of reinforced concrete (RC) buildings. The present study experimentally and computationally investigated the progressive collapse resistance of RC frames subjected to a center column loss. A one-third scale model of a single-story RC frame, which comprises two spans and two bays, was tested and computed. During the experiment and numerical analysis, the vertical displacement on the top of the removed center column was applied until it failed. This study gives insight into the progressive collapse behaviour as well as the failure mode of the RC frame. It has been shown that the catenary action can be activated in the frame beams, and the tensile membrane action can also be mobilized in the frame slabs at large deformations. Based on the experimental and computational results, the mechanism of progressive collapse resistance of RC frames was discussed. At large deformations, a simplified calculation method of progressive collapse resistance of RC frames was also proposed.
