EVALUATION OF DETERMINISTIC AND PROBABILISTIC EFFECTS OF REDUNDANCY ON THE RESPONSE MODIFICATION FACTOR FOR RC MOMENT RESISTING FRAMES WITH EQUAL LATERAL RESISTANCE

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MOHAMMADI R.; MASSUMI A.; MESHKAT ALDINI A.

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Journal: Sharif Journal of Civil Engineering Year:2016 | Volume:32-2 | Issue:1.2 Page(s): 3-13

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Title

EVALUATION OF DETERMINISTIC AND PROBABILISTIC EFFECTS OF REDUNDANCY ON THE RESPONSE MODIFICATION FACTOR FOR RC MOMENT RESISTING FRAMES WITH EQUAL LATERAL RESISTANCE

Author(s)

MOHAMMADI R. | MASSUMI A. | MESHKAT ALDINI A. | Issue Writer Certificate

Keywords

REDUNDANCYQ2

OVER STRENGTHQ2

PROBABILISTIC OVER STRENGTH INDEXQ2

DETERMINISTIC OVER STRENGTH INDEXQ2

DUCTILITYQ2

RESPONSE MODIFICATION FACTORQ2

Abstract

The general opinion regarding the OVER STRENGTH capacity of a structure is explained by the process of first local yielding to total failure being due to structural REDUNDANCY. Furthermore, results of some research indicate that this part of the OVER STRENGTH capacity can be introduced as a REDUNDANCY reduction factor. On the other hand, some other research showed that an analytical parameter, according to the lines of vertical seismic framing and the theory of structural reliability, can be formulated as the REDUNDANCY reduction factor independent of the OVER STRENGTH reduction factor in the analytical definition of the RESPONSE MODIFICATION FACTOR. A general conceptual question is why structural REDUNDANCY has been regarded as a desirable property. Is it because making more OVER STRENGTH capacity or just increasing the number of seismic resistant frames will make the structural behavior more desirable, as well as increasing the reliability of the systems? To answer these questions, six and nine floor three-dimensional reinforced concrete framed structures with the same story area and the same equal lateral resistance were designed. In this research, the essential parameters of the RESPONSE MODIFICATION FACTOR for the studied structures were estimated numerically. Furthermore, by considering the strength factor as a random variable, both the deterministic and probabilistic effects of REDUNDANCY on the RESPONSE MODIFICATION FACTOR were also evaluated. The results of this research illustrated that imposition of an increase in REDUNDANCY, where no more OVER STRENGTH capacity will be made, might not improve the behavior of the framed structure.It is assumed that the same ultimate lateral resistance of structures that causes an increase, to a certain level, in REDUNDANCY, can also enhance both the DUCTILITY capacity and the inelastic capacity of structures. However, any further increase in the REDUNDANCY of that certain level might have a negative effect on the DUCTILITY capacity.

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APA: Copy

MOHAMMADI, R., MASSUMI, A., & MESHKAT ALDINI, A.. (2016). EVALUATION OF DETERMINISTIC AND PROBABILISTIC EFFECTS OF REDUNDANCY ON THE RESPONSE MODIFICATION FACTOR FOR RC MOMENT RESISTING FRAMES WITH EQUAL LATERAL RESISTANCE. SHARIF: CIVIL ENINEERING, 32-2(1.2), 3-13. SID. https://sid.ir/paper/127921/en

Vancouver: Copy

MOHAMMADI R., MASSUMI A., MESHKAT ALDINI A.. EVALUATION OF DETERMINISTIC AND PROBABILISTIC EFFECTS OF REDUNDANCY ON THE RESPONSE MODIFICATION FACTOR FOR RC MOMENT RESISTING FRAMES WITH EQUAL LATERAL RESISTANCE. SHARIF: CIVIL ENINEERING[Internet]. 2016;32-2(1.2):3-13. Available from: https://sid.ir/paper/127921/en

IEEE: Copy

R. MOHAMMADI, A. MASSUMI, and A. MESHKAT ALDINI, “EVALUATION OF DETERMINISTIC AND PROBABILISTIC EFFECTS OF REDUNDANCY ON THE RESPONSE MODIFICATION FACTOR FOR RC MOMENT RESISTING FRAMES WITH EQUAL LATERAL RESISTANCE,” SHARIF: CIVIL ENINEERING, vol. 32-2, no. 1.2, pp. 3–13, 2016, [Online]. Available: https://sid.ir/paper/127921/en

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