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Modelling of tall shear walls for pushover analysis of reinforced concrete buildings
Published in
2011
Volume: 85
   
Issue: 8
Pages: 7 - 14
Abstract
Well designed and detailed reinforced concrete shear walls in a building can provide the required lateral stiffness and strength, as well as ductility, for resisting seismic loads. A pushover analysis is preferred to an equivalent static analysis to estimate the non-linear behaviour of a building under seismic loads. The present study investigated the different options for modelling a tall and solid shear wall in a pushover analysis of a regular multi-storeyed building. Two approaches were adopted for modelling the non-linear behaviour of a shear wall. The first one was based on lumped (point) plasticity, where the shear wall was modelled using column elements (Model 1). The second one was based on spread (distributed) plasticity, where the wall was modelled using fibre-based wall elements (Model 2). The analyses of Models 1 and 2 were compared based on the pushover curves, demand and capacity spectra plots, and formation of hinges. The observed non-linear behaviours of the two models were very similar. It is concluded that the modelling of a tall and solid shear wall using column elements is adequate for pushover analysis, provided the hinge properties are defined properly.
About the journal
JournalIndian Concrete Journal
ISSN00194565
Open AccessNo
Concepts (18)
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    CONCRETE SHEAR WALL
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    FIBRE-BASED ELEMENT
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    LATERAL STIFFNESS
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    LUMPED PLASTICITY
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    NONLINEAR BEHAVIOURS
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    PUSH-OVER ANALYSIS
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    PUSHOVER CURVE
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    Seismic load
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    SOLID SHEAR
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    SPREAD PLASTICITY
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    Concrete construction
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    Nonlinear analysis
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    Plasticity
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    Reinforced concrete
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    Seismology
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    Shear walls
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    Textile fibers
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    Concrete buildings