Examination of New Device of Steel Anti-Seismic Element for the Purpose of Strengthening of Reinforced Concrete Building Structures

Abstract eng:
During the last years, several researchers propose, the partial or whole replacement of anti-seismic Reinforced Concrete (R/C) walls on buildings with the use of Special Anti-seismic Steel Elements (SASEs), which provide additional stiffness as well as absorption of seismic energy. This project suggests a new connection device of these elements (SASEs) with the R/C frame, that provides control of the forces that are developed at the diagonal Steel rods, ensures (protects) from possible failure of the R/C frame and simultaneously absorbs the seismic energy. The proposed devices, named CΑRs (Control, Absorption, Restrain Steel Elements), have the ability to retain the plastic displacements to a desired level. Inelastic analysis by the procedure of PushOver until structural collapse and also quasistatic analysis using cyclic loading were carried out. The obtained numerical results point out the effectiveness of the suggested device.

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