Progressive Collapse Resisting Capacity of RC Flat Slab Buildings with Varying Spans and Storey Heights

Abstract:

With no beams, reinforced concrete flat slab buildings are typically built to advance urban growth and to meet the architectural needs of large spans and low storey heights. Its behaviour to avoid a progressive collapse must therefore be investigated. In this research, the progressive collapse resistance of six-storey RC flat slab buildings with varying span lengths and floor heights is assessed by subjecting the building to three different instances of instantaneous removal of columns in the first storey, performing dynamic progressive collapse analysis as per GSA guidelines, and comparing the evaluated joint displacements and chord rotations at column removal locations with the permissible chord rotation for flat slab buildings as per DoD guidelines. The results have shown that the studied flat slab building with all different span lengths and floor heights is prone to progressive collapse. It is also observed that the vertical displacements and chord rotations at column removal positions increase as the span lengths and storey heights are increased alternately.

• Periodical: Key Engineering Materials (Volume 894)
• Pages: 115-120
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.894.115
• Online since: July 2021
• Authors: Suyash Garg*, Vinay Agrawal, Ravindra Nagar
• Keywords: Chord Rotation, Dynamic Analysis, Flat Slab, Instantaneous Column Removal, Progressive Collapse, Vertical Displacement

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