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Structural Engineering and Mechanics Volume 86, Number 2, April25 2023 , pages 277-290 DOI: https://doi.org/10.12989/sem.2023.86.2.277 |
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Behavior factors for mixed reinforced concrete wall and buckling restrained braced frame |
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Hamid Beiraghi and Behdad Abbaspour
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| Abstract | ||
| A supplementary reinforced concrete wall can be used to improve the seismic behavior of a buckling restrained braced frame as a mixed system. In such a novel system, the total lateral force is resisted by the combination of the RC wall system and the BRBF. There is not enough research on the response modification factor of such a mixed system. This paper investigates the response modification factor, and such relevant factors as ductility reduction factor and over strength factor for a system consisting of reinforced concrete wall and buckling restrained braced frame. To this purpose, nonlinear incremental dynamic analysis as well as static push over analysis are used for 6- to 14-story sample structures. The results show that for mixed considered systems, the mean value of response modification factor varies approximately from 7 to 9. | ||
| Key Words | ||
| buckling restrained braced frame; IDA; reinforced concrete wall; response modification factor | ||
| Address | ||
| Hamid Beiraghi and Behdad Abbaspour: Department of Civil Engineering, Mahdishahr Branch, Islamic Azad University, Mahdishahr, Iran | ||