Document Type : Original Article
Authors
1
Professor, Department of Civil Engineering, Sharif University of Technology, Tehran, Iran
2
Master of Structural Engineering, Department of Civil Engineering, Sharif University of Technology, Tehran, Iran
3
PhD student, Department of Civil Engineering, Sharif University of Technology, Tehran, Iran
10.22065/jsce.2023.408516.3178
Abstract
Steel Plate Shear Walls (SPSWs) are being increasingly utilized as one of the efficient lateral load-resisting systems in seismic zones. Adopting openings in the infill plate of SPSWs is sometimes essential owing to the architectural requirements, structural reasons, as well as constructional limitations. This study aims at investigating the influence of strip openings on the structural performance of perforated steel plate shear walls with different infill plate boundary conditions. In this regard, a variety of perforated SPSWs with vertical and horizontal strip openings are designed and then numerically simulated possessing different aspect ratios and opening features. The effects of the dimensions and orientations of the strip openings are evaluated through response parameters in terms of drift and stress ratios corresponding to the flexural strength, axial and shear forces. According to the simulation results, in general, introduction of the horizontal and vertical openings attenuates the stiffness of perforated SPSWs, and in turn, the drift response of the structure becomes more pronounce. A non-dimensionalized parameter is also introduced to indicate how the boundary conditions and opening dimensions affect the drift response of the structure. The results indicate that an increase in the width and length of the opening can exacerbate the induced stress values corresponding to the axial forces, flexural moments, and their combination in the columns and beams. In addition, the use of perforated SPSW with opening of less than 0.25m2 can offer similar seismic performance as compared to that of SPWS with infill plate and without opening.
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