Abstract

Progressive collapse analysis of three 20-storey regular building with/without central atrium and irregular RC frame buildings using linear elastic static and nonlinear static methodologies is carried out using SAP2000 software. Irregularity is provided by taking stepped-type geometry in elevation along shorter bay. Each procedure of the performed analysis is investigated thoroughly and DCR values are quantified, described in brief with advantages and disadvantages, comparing significantly according to GSA guidelines. The purpose of this research is to investigate structural linear and nonlinear behaviour of different building structures and develop design rules and strategies to economically design structures resistant to progressive collapse. Using nonlinear static analysis, rotation and displacement of plastic hinges are observed along with percentage GSA load attempt caused due to sudden removal of primary load-bearing column member of ground floor from different positions.

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