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Membrane actions of RC slabs in mitigating progressive collapse of building structures

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Membrane actions of RC slabs in mitigating progressive collapse of building structures

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dc.contributor.author Tan, Kang Hai
dc.contributor.author Pham, Xuan Dat
dc.date.accessioned 2011-09-15T03:24:01Z
dc.date.available 2011-09-15T03:24:01Z
dc.date.copyright 2010
dc.date.issued 2011-09-15
dc.identifier.citation Tan, K. H., & Pham, X. D. (2010). Membrane actions of RC slabs in mitigating progressive collapse of building structures Membrane actions of RC slabs in mitigating progressive collapse of building structures. Proceedings of the Design and Analysis of Protective Structures, Singapore.
dc.identifier.uri http://hdl.handle.net/10220/7063
dc.description.abstract The potential for progressive collapse of RC buildings can be studied using column loss scenarios. The loss of either internal or external penultimate columns is among the most critical scenarios since the affected beam-and-slab substructure associated with the removed column becomes laterally unrestrained with two discontinuous slab edges. At large deformations, the membrane behaviour of the affected slab, consisting of a compressive ring of concrete around its perimeter and tensile membrane action in the central region, represents an important line of defense against progressive collapse. The reserve capacity can be used to sustain the amplified gravity loads and to mitigate the progressive collapse of building structures. In this paper, an advanced finite model (FEM), which is first verified by available test data, is used to investigate the membrane behavior of RC slabs under the effect of three conditions: The presence of interior beams, rotational restraint along the perimeter edges of the slabs and top reinforcement. It is found that with the presence of interior beams, more tensile membrane forces may be mobilized in the central region as the beam reinforcement is in tension together with slab reinforcement. In the outer region, the compressive ring of concrete which equilibrates the tensile membrane forces may also be strengthened by hogging moment in the top reinforcement along the perimeter edges. These conditions actually enhance the load-carrying capacity of the beam-slab structure to sustain the applied load severely amplified by the doubling-of-span effect due to the loss of a supporting column.
dc.format.extent 10 p.
dc.language.iso en
dc.rights © 2010 Design and Analysis of Protective Structures.  This is the author created version of a work that has been peer reviewed and accepted for publication by Design and Analysis of Protective Structures.  It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document.  The official conference website is: http://www.cee.ntu.edu.sg/Conferences/daps2010/index.htm.
dc.subject DRNTU::Engineering::Civil engineering::Structures and design.
dc.title Membrane actions of RC slabs in mitigating progressive collapse of building structures
dc.type Conference Paper
dc.contributor.conference Design and Analysis of Protective Structures (3rd : 2010 : Singapore)
dc.contributor.department Graduate Studies Office
dc.contributor.research Protective Technology Research Centre
dc.contributor.school School of Civil and Environmental Engineering
dc.identifier.openurl http://www.cee.ntu.edu.sg/Conferences/daps2010/index.htm
dc.description.version Accepted version

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