Open AccessProgressive collapse behaviour of compressed-bent rods of RC moment frames at sudden column removal
Author(s) -
Sergey Savin
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/869/5/052040
Subject(s) - structural engineering , bent molecular geometry , progressive collapse , frame (networking) , fracture (geology) , stability (learning theory) , column (typography) , stiffness , moment (physics) , compression (physics) , materials science , computer science , reinforced concrete , composite material , engineering , physics , connection (principal bundle) , telecommunications , classical mechanics , machine learning
Due to the increasing incidence of disproportionate destruction of structural elements after the sudden removal of any supporting element, the number of studies of the resistance of structural systems to progressive collapse has grown significantly. However, among the research results presented in the scientific literature, there are practically no such studies in which an analysis of the resistance of compressed and compressed-curved reinforced concrete elements to disproportionate destruction would be performed. Therefore, in this paper, using the step-iteration method (Lira-CAD software) and non-linear stability analysis, we analyzed the behavior of the frame model when the column of the outer row was suddenly removed. In order to solve this problem, the analytical dependences are obtained for evaluating the stiffness of sections of compressed and compressed-curved elements. It has been established that the disproportionate fracture mechanism of compressed-bent elements of frame model is associated with a loss of stability.