Investigation on progressive collapse failure in a multistorey irregular structure

Progressive collapse occurs due to failure of Primary load carrying members when subjected to abnormal loads or during the occurrence of earthquakes. This leads to overloading in nearby structural elements. Therefore, the load pattern of the overloaded elements changes which ultimately leads to failure of the elements. Stiffness Irregular RCC framed structures having variance in height of the storey is considered to examine the Potential ability of seismically designed buildings against Progressive Collapse and compared them with nominal model. G + 12 reinforced concrete framed regular and various models of Stiffness irregular structures were considered in the study to analyze Progressive collapse of buildings. A package based on finite element method SAP 2000 is used to model the structures and the behaviour of structures is evaluated by performing Linear Static Analysis by static loads and Time History Analysis by dynamic loads. Results of the analysis determined the intensity of structural damage caused under column removal. Calculation of DCR'S of the beam elements in critical region associated with column removal seems to fail both in Flexure and Shear. (c) 2021 Elsevier Ltd. All rights reserved. Selection and peer-review under responsibility of the scientific committee of the 1st International Conference on Computations in Materials and Applied Engineering - 2021.