Numerical comparison on the efficiency of conventional and hybrid buckling-restrained braces for seismic protection of short-to-mid-rise steel buildings

Author:

Alborzi M.,Tahghighi H.ORCID,Azarbakht A.

Abstract

AbstractBuckling-restrained brace (BRB) is a specific kind of bracing system which has an acceptable energy dissipation behavior in a way that would not be buckled in compression forces. However, considerable residual deformations are noticed in strong ground motions as a result of the low post-yield stiffness of the BRBs. The seismic performance of a modern lateral load resisting system, which is called the hybrid BRB, and its conventional counterpart are assessed and compared in this paper. Multiple plates with different stress–strain behavior are used in the core of this new innovative system, and this is its difference with the existent BRBs. Nonlinear static and incremental dynamic analyses are carried out for three building frames with different structural heights, which use conventional and hybrid BRB systems. To carry out response history analyses, the FEMA P695 far-field earthquake record set was adopted in different hazard levels. The hybrid BRBs are shown to have superior seismic performance in comparison with the conventional systems based on the response modification factor and the damage measures including residual displacements and inter-story drift ratios.

Publisher

Springer Science and Business Media LLC

Subject

Civil and Structural Engineering

Reference50 articles.

Cited by 4 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. A critical review on buckling restrained braces;Journal of the Croatian Association of Civil Engineers;2024-01

2. NONLINEAR FINITE ELEMENT ANALYSIS OF ALL-STEEL BUCKLING RESTRAINED BRACES;ADV STEEL CONSTR;2023-09-01

3. Steel rings as seismic fuses for enhancing ductility of cross braced frames;Earthquake Engineering and Engineering Vibration;2022-10

4. Seismic Response of Diagrid Systems: Ductility Concerns in Low- to Midrise Structures;Practice Periodical on Structural Design and Construction;2021-11

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