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Quantifying parameters that ensure large deformability of earthquake resistant RC buildings in high seismic regions
Published in Earthquake Engineering Research Institute
2014
Abstract
A quantitative approach is required to ensure desired global ductile behaviour with at least a guaranteed level of deformation capacity of buildings. This paper quantifies the required column-to-beam strength ratio, and insufficiency of the current code prescribed values of strength ratio to achieve a ductile mechanism. Column-to-beam strength ratio is varied by varying column size and reinforcement in the columns; beam size and reinforcement are kept constant. Nonlinear static pushover analyses of designed RC buildings with different column-to-beam strength ratios show different collapse mechanisms, lateral strengths and energy dissipation characteristics. Column-to-beam strength ratio alone does not result in the desired global ductile behaviour and do not guarantee the desired deformability. Further, the required column-to-beam strength ratio is same, depending on the design, for different hazard levels (reflected by the design seismic coefficient). An appropriate value of minimum column-to-beam strength ratio to achieve a ductile mechanism is presented along with pointers to ensure large deformability of buildings.
About the journal
JournalNCEE 2014 - 10th U.S. National Conference on Earthquake Engineering: Frontiers of Earthquake Engineering
PublisherEarthquake Engineering Research Institute
Open AccessNo
Concepts (17)
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    Concrete buildings
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    Deformation
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    Earthquake resistance
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    Energy dissipation
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    Engineering geology
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    Reinforcement
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    Seismic design
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    Seismology
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    COLLAPSE MECHANISM
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    DEFORMATION CAPACITY
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    EARTHQUAKE RESISTANT
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    ENERGY DISSIPATION CHARACTERISTICS
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    LATERAL STRENGTH
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    NONLINEAR STATIC PUSHOVER ANALYSIS
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    Quantitative approach
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    SEISMIC COEFFICIENT
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    Earthquakes