ISSN: 1304-7191 | E-ISSN: 1304-7205
Seismic evaluation of tall RC frames with hybrid friction damper and shape memory alloy designed by PBPD method
1Department of Civil Engineering, Chalous Branch, Islamic Azad Univerity, Chalous, 1477893855, Iran
Sigma J Eng Nat Sci 2024; 42(6): 1683-1696 DOI: 10.14744/sigma.2024.00135
Full Text PDF

Abstract

This paper suggests a novel lateral load-resisting solution for RC (high-rise reinforced concrete) frames using superelastic SMA wires as friction dampers. The suggested SMA-friction damper has some advantages, such as an easy-to-configure and affordable application, in ad-dition to being able to control the frictional energy dissipation components mechanism in line with the design procedure based on the suggested effectiveness thanks to its self-centering SMA wires. With the least amount of SMA use, it may produce hysteretic behavior and an intense tendency for self-centering. The research used two distinct design modes—common and with the recommended damper—to construct two tall, 18- and 22-story RC frames. Ten farfield earthquakes were studied using OpenSees software in a nonlinear time history fash-ion. Eighteen and twenty-two-story reinforced concrete frame high-rises were designed in two distinct ways: normally and with the recommended damper. Aside from the major advancement in ductility, the lateral strength and stiffness gave an exceptional capacity for self-centering, resulting in a substantial decrease in most drift and persistent distortions in the structure. The study’s findings showed that the suggested damper may improve the RC frame’s structural performance while using the fewest bracing spans and money.