Robustness Evaluation of RC Bare Frame and Infilled Frame Buildings to Progressive Collapse Under Corner and Middle Column Removal Scenario

Author(s): M. Prakash, N. Partha Sarathi, K. S. Satyanarayanan and V. Thamilarasu

Progressive collapse occurs when primary structural element fails due to many reasons such as impact, earthquake, abnormal loading etc., resulting in the failure of adjoining structural elements, which in turn causes partial or total collapse of the structure consequently. The present study investigates the comparison behaviour of 2 bay X 2 bay, five storey RC bare frame and infilled frame and to assess the effect of infill to resist the progressive collapse. A linear static analysis is carried out using finite element software using SAP 2000 for corner, and middle column was removed and studied under dead load conditions. In this study and Demand Capacity Ratio (DCR) of a five storey bare frame and infilled frame building was evaluated as per GSA guidelines. Results are bare frame and infilled frames compared and it shows that the presence of infilled frames will delay the progressive collapse when compared to bare frames.

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