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Journal of Applied Sciences
  Year: 2009 | Volume: 9 | Issue: 6 | Page No.: 1065-1073
DOI: 10.3923/jas.2009.1065.1073
 
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A Nonlinear Dynamic Based Redundancy Index For Reinforced Concrete Frames

A.A. Fallah, A.S. Moghadam and A. Massumi

Abstract:
In almost all codes of practice for seismic resistant design of buildings, a behavior factor is used to reduce design base shear. The behavior factor is affected by several parameters such as ductility, overstrength and redundancy reduction factors. There are two common approaches to assess the effects of redundancy on the strength of a structural system, which are as follows: static pushover analysis and incremental dynamic analysis. The two indices: redundancy strength coefficient and redundancy variation coefficient have been introduced to measure these effects. Simplified methods are developed and presented to calculate these parameters. In this study, the redundancy strength and the redundancy variation parameters are evaluated for the reinforced concrete plane frames with different number of stories, bays and ductility capacities. The investigations indicate that these two parameters are mainly the results of redundancy reduction factors.
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How to cite this article:

A.A. Fallah, A.S. Moghadam and A. Massumi, 2009. A Nonlinear Dynamic Based Redundancy Index For Reinforced Concrete Frames. Journal of Applied Sciences, 9: 1065-1073.

DOI: 10.3923/jas.2009.1065.1073

URL: https://scialert.net/abstract/?doi=jas.2009.1065.1073

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