Civil Engineering Infrastructures Journal 2021, 54(1): 181-194 DOI: 10.22059/ceij.2020.291570.1624 TECHNICAL NOTE A Review on Progressive Collapse of Reinforced Concrete Flat Slab Structures Silpa, G. 1 and Yamini Sreevalli, I. 2 * 1 Ph.D. Candidate, Research Scholar, School of Mechanical and Building Sciences, Vellore Institute of Technology, Chennai, India. 2 Associate Professor, School of Mechanical and Building Sciences, Vellore Institute of Technology, Chennai, India. © University of Tehran 2021 Received: 29 Oct. 2019; Revised: 07 Sep. 2020; Accepted: 12 Sep. 2020 ABSTRACT: The reinforced concrete flat slab structures are highly susceptible to punching shear failure. This occurs due to the transferring of shear force and due to the bending moment between the slab and the column. The initial local failure and the following redistribution of load can lead to punching failure of the slab in the adjacent column locations. This issue can collapse an entire building or a huge portion of a structure. Hence, an alternate load path method is necessary for preventing the catastrophic failure of the buildings. Compared to the moment frame buildings, flat slab buildings are more prone to the progressive collapse. Thus, the designing of flat plate structures demands more attention and study. Due to higher construction costs and limitations in the test set up, the researchers have adopted scale down structures for the experimental studies. The progressive collapse behavior of the prototype structures is usually analyzed using both analytical and numerical simulations. This paper discusses the existing researchers on the analytical study, experimental study, and numerical simulations of flat slab structures along with various load resisting mechanisms to mitigate progressive collapse. Further, various strengthening techniques available in the literature for the flat slab structures have been discussed. A parametric study and comparison of different strengthening techniques are also performed in this work. Keywords: Flat Slab, Load Carrying Mechanisms, Progressive Collapse, Punching Shear, Strengthening Technique. 1. Introduction The reinforced concrete flat slab structure comprises of slabs with or without drop panels, which is directly supported on the columns with or without flared column heads. Flat slab structures without drop panels are called as flat plate structures. The flat slab structures are generally used in * Corresponding author E-mail: [email protected] industrial and residential buildings. Simple formwork, less construction cost, ease of installation, higher flexibility in interior layout, ease of future renovation, and larger clear space are the major advantages of the flat plate buildings. The increased freedom in architectural design will also help to minimize the cost of maintenance and construction. Despite these advantages, the
A Review on Progressive Collapse of Reinforced Concrete Flat Slab Structures
Jun 29, 2023
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