Seismic response of a RC structure with new self-centering metallic dampers under biaxial near-field ground motions: Shake table tests

Benavent‐Climent, Amadeo; González-Sanz, Guillermo; Donaire-Ávila, Jesús; Galé-Lamuela, David; Escolano‐Margarit, David

doi:10.1016/j.jobe.2022.105753

Cited by 4 publications

(1 citation statement)

References 38 publications

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“…It consists of a central steel core enclosed in a buckling-restraint mechanism, which generates and dissipates energy through stable tension-compression hysteretic cycles, preventing brace buckling [11][12][13]. BRB development consists of three phases: The initial external restraining system comprises a concrete-infilled steel section combined with a steel core, which can take the form of a plate, I section, or other steel cross-section [14][15][16][17]. The complexities of pouring and curing concrete pose challenges in achieving precise configuration of the steel core and the gap between the concrete and steel core.…”

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confidence: 99%

Effect of Pre-tensioning Force on Behavior of Buckling Restrained Brace (BRB) Supported by Double Pre-tensioning System

Selim,

E. Kamel,

Elshamy

et al. 2023

Frattura Ed Integrità Strutturale

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The study explores the feasibility of a new all-steel buckling restrained brace (BRB) with the double pre-tensioning system as an alternative to conventional concentrically braced frames by using finite element method (ABAQUS program), And to verify modeling, use U-V1 specimen results and compare them with test results. The restraining element in an all-steel BRB is built from a rectangular plate with a double cross arm and cables, making it easy to fabricate, inspect, and replace after a severe earthquake. Numerical analyses were conducted on four groups: first group of specimens using dynamic loading to achieve the minimum thickness for stable hysteretic behavior and high efficiency for BRB, and three groups of specimens using monotonic loading to achieve the best pre-tensioning forces value in steel 37, 44 and 52 for greater efficient use of all steel BRB. The results showed a 66% improvement in bearing capacity, with the external restraining case thickness reduced to 20 mm, making it lightweight, economical, and easy to maintain. The specimens with a pre-tensioning force of 70 kN, 50 kN and 40 kN providing a 31%, 51% and 73.2 % for steel 37, 44 and 52 respectively over than the design specimen without pre-tensioning system.

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