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Numerical modelling of load-deflection behaviour of reinforced concrete beam-slabs
Published in Structural Engineering Research Centre
2017
Volume: 44
   
Issue: 5
Pages: 509 - 518
Abstract
An efficient computational technique for nonlinear analysis of reinforced concrete (RC) beam-slab systems (rectangular grids) using grillage analogy is proposed. A load-controlled algorithm has been adopted for tracing the complete load-deflection response till the ultimate load, under monotonic loading. Material modelling of reinforced concrete in the present study includes nonlinear stress-strain behaviour such as cracking of concrete, yielding of steel and tension-stiffening effect. The proposed methodology has been validated against the test data reported in the literature as well as the experiments conducted for the present study. The numerically generated load-deflection curves are found to be in good agreement with the experimental results. The main advantages of this procedure is that it gives a more accurate estimation of short-term deflections under service loads, and a more realistic distribution of moments and shear forces at the limit state of collapse. Further, the algorithm can be conveniently used in reliability analysis of reinforced concrete beam-slab systems.
About the journal
JournalJournal of Structural Engineering (India)
PublisherStructural Engineering Research Centre
ISSN09700137
Open AccessNo
Concepts (15)
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    Concrete beams and girders
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    Concretes
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    Deflection (structures)
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    Loads (forces)
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    Nonlinear analysis
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    Reliability analysis
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    BEAM-SLAB
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    GRILLAGE ANALOGY
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    LOAD DEFLECTION
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    LOAD-DEFLECTION RESPONSE
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    NON-LINEAR STRESS-STRAIN
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    Reinforced concrete beams
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    Stiffness degradation
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    TENSION STIFFENING EFFECTS
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    Reinforced concrete