Seismic performance evaluation of buckling restrained braced frames (BRBF)
using incremental nonlinear dynamic analysis method (IDA)
M. Khorami,M. Khorami,M. Alvansazyazdi,M. Shariati,Y. Zandi,A. Jalali,M.M. Tahir
Abstract
In this paper, the seismic behavior of BRBF structures is studied and compared with special concentric braced
frames (SCBF). To this purpose, three BRBF and three SCBF structures with 3, 5 and 10 stories are designed based on
AISC360-5 and modelled using OpenSees. These structures are loaded in accordance with ASCE/SEI 7-10. Incremental
nonlinear dynamic analysis (IDA) are performed on these structures for 28 different accelerograms and the median IDA curves are used to compare seismic capacity of these two systems. Results obtained, indicates that BRBF systems provide higher
capacity for the target performance level in comparison with SCBF systems. And structures with high altitude (in this study, 5
and 10 stories) with the possibility of exceeding the collapse prevention performance level, further than lower altitude (here 3
floors) structures.
M. Khorami : Facultad de Arquitectura y Urbanismo, Universidad Tecnológica Equinoccial, Calle Rumipamba s/n y Bourgeois, Quito, Ecuador
/Facultad de Ingeniería Civil y Ambiental, Escuela Politécnica Nacional, Ladrón de Guevara E11-253L, Quito, Ecuador
M. Khorami : Civil Engineering Department, Islamic Azad University, Tehran, Iran
M. Alvansazyazdi : Facultad Ingeniería Ciencias Físicas y Matemática, Carrera Ingeniería Civil, Universidad Central del Ecuador, Quito, Ecuador
5Facultad de Arquitectura, Universidad Laica Eloy Alfaro de Manabí, Ecuador
M. Shariati and A. Jalali : Faculty of Civil Engineering, University of Tabriz, Tabriz, Iran
Y. Zandi : Department of Civil Engineering, Tabriz Branch, Islamic Azad University, Tabriz, Iran
M.M. Tahir : UTM Construction Research Centre, Faculty of Civil Engineering, Institute for Smart Infrastructure and
Innovative Construction, UTM, 81310, Johor Bahru, Johor, Malaysia
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