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Title
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تحليل حساسيت رفتار لرزه اي المان قابي سه بعدي بتن مسلح با درنظر گرفتن اندركنش بتن و ميلگرد.
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Type
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Presentation
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Keywords
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seismic behavior, 3D reinforced concrete frame, bar-concrete interaction, biaxial bending, cyclic analysis
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Abstract
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In this paper, a numerical model based on the fiber method is used for nonlinear analysis of
three dimensional reinforced concrete moment resisting frames. The bond-slip effect has been
considered in the formulation of beam-column and joint elements. Two types of joint and beamcolumn
elements are used in the formulations. Biaxial bending and axial force in the cross
section of elements assumed to be nonlinear but the torsional behavior remains in elastic range.
The theory of numerical calculations is similar to fiber method but the perfect bond assumption
between the bars and surrounding concrete has been removed. The reliability of the numerical
method has been assessed through the comparison of analytical and experimental cyclic results.
Including the ability to use this method is that it takes embedded length of longitudinal bars in
the joints into account and also considers nonlinear relation for the bond-slip effect. By
definition of bond-slip effect in three cases of weak, normal and strong conditions, analytical
behavior in two fields of strength and stiffness have been compared to the corresponding real
and experimental values.
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Researchers
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Shaker Hashemi (First researcher) , Mohammad Vaghefi (Third researcher)
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