Earthquakes and Structures

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Seismic behavior of thin cold-formed steel plate shear walls with different perforation patterns

  • Monsef Ahmadi, H. (Civil Engineering Department, Urmia University) ;
  • Sheidaii, M.R. (Civil Engineering Department, Urmia University) ;
  • Tariverdilo, S. (Civil Engineering Department, Urmia University) ;
  • Formisano, A. (Department of Structures for Engineering and Architecture, University of Naples "Federico II") ;
  • De Matteis, G. (Department of Architecture and Industrial Design, University of Campania Luigi Vanvitelli)
  • Received : 2019.12.14
  • Accepted : 2021.03.22
  • Published : 2021.04.25
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Abstract

Thin perforated Steel Plate Shear Walls (SPSWs) are among the most common types of seismic energy dissipation systems to protect the main boundary components of SPSWs from fatal fractures in the high-risk zones. In this paper, the cyclic behavior of the different circular hole patterns under cyclic loading is reported. Based on the experimental results, it can be concluded that a change in the perforation pattern of the circular holes leads to a change in the locations of the fracture tendency over the web plate, especially at the plate-frame interactions. Accordingly, the cyclic responses of the tested specimens were simulated by finite element method using the ABAQUS package. Likewise, perforated shear panels with a new perforation pattern obtained by implementing Topology Optimization (TO) were proposed. It was found that the ultimate shear strength of the specimen with the proposed TO perforation pattern was higher than that of the other specimens. In addition, theoretical equations using the Plate-Frame Interaction (PFI) method were used to predict the shear strength and initial stiffness of the considered specimens. The theoretical results showed that the proposed reduced coefficients relationships cannot accurately predict the shear strength and initial stiffness of the considered perforated shear panels. Therefore, the reduced coefficients should be adopted in the theoretical equations based on the obtained experimental and numerical results. Finally, with the results of this study, the shear strength and initial stiffness of these types of perforated shear panels can be predicted by PFI method.

Keywords

References

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