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Arman Mamazizi

Arman Mamazizi

Academic rank: Assistant Professor
ORCID: https://orcid.org/my-orcid?orcid=0000-0003-0440-8495
Education: PhD.
ScopusId: 987
HIndex:
Faculty: Faculty of Engineering
Address: No.209 at Department of Civil Engineering, University of Kurdistan, Sanandaj, Iran. P.O.Box: 66177-15175
Phone: +98 (0)87 33660073

Research

Title
DAMAGE CONTROL AND ENHANCEMENT OF STRUCTURAL RESILIENCE OF STEEL SHEAR WALL USING VISCOPLASTIC DAMPERS
Type
Presentation
Keywords
Damper, Steel Shear Wall, Damage Control
Year
2024
Researchers Reza Soltanabadi ، Himan Hojat Jalali ، Arman Mamazizi ، Mohammad Mahmoud Ahmad

Abstract

Steel plate shear wall (SPSW) systems are utilized in steel structures as a lateral-force-resisting system in high seismicity zones. In conventional SPSW systems, the stiffness and energy absorption mechanisms are combined in the main structural members, resulting in the formation of inelastic deformations, severe damages, and residual lateral displacements. Therefore, a combination of SPSW systems with passive dampers is employed to mitigate these defects. This study numerically investigates the seismic behavior of a new lateral-force-resisting system, which combines a viscoplastic damper and steel plate shear wall. The proposed damper is constituted of a layer of high-damping rubber with viscoelastic and hyperelastic characteristics and ductile steel bolts. The suggested SPSW systems can improve structural resilience, including damage control, self-centering behavior, and building performance levels. Once the results of numerical analyses were validated with the experimental works, several nonlinear finite element models were used to evaluate the overall seismic response of the proposed system. The results showed that the proposed damper could perform as a fuse, protecting the main structural elements to be elastic and undamaged. In addition, the high-damping rubber could substantially reduce the residual lateral displacements and improve the self-centering behavior compared to the conventional SPSW systems.