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Numerical Investigation of Stiffened Beam-Only Connected Steel Plate Shear Walls

Meghdadi, Zeinab | 2020

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 53824 (09)
  4. University: Sharif University of Technology
  5. Department: Civil Engineering
  6. Advisor(s): Mofid, Masoud
  7. Abstract:
  8. This study aims for investigating a novel type of Steel Plate Shear Wall (SPSW) system in which the plate to boundary column connections are eliminated and the plate is reinforced with side, horizontal or cross stiffeners. SPSWs are one of the best lateral load resisting systems specially in high-rise buildings which makes it to be widely used in modern construction projects. SPSW system was first used in Japan and United States and found its way to other countries through the next years. In contrary to United States, stiffened SPSWs are more popular in Japan as it is a high seismic area. Despite the numerous advantages of this system, the main drawback of SPSWs is the large column sections needed for the boundary elements of the steel plate. The steel plate in SPSW system has post-buckling strength that imposes very large tension field forces on boundary columns which, in capacity design concept, must be resisted by columns to prevent the plastic hinges from forming along with the column height. In the recent decade, the idea of separating the steel plate from the boundary columns has been proposed. This investigation focuses on the behavior of beam-only connected steel plate shear walls with different sections and arrangements of stiffeners and also different plate thicknesses. The results showed no sudden strength degradation in any of the specimens which indicates the ductile and stable hysteretic behavior of this system. In side, horizontally and cross stiffened SPSW the tension was formed throughout the steel plate, between the stiffeners and boundary beams and in subpanels, respectively. In all arrangements of the stiffeners, the T-section exhibited a better performance and an increase in the thickness of the stiffener results in a higher ultimate strength of the specimen
  9. Keywords:
  10. Steel Plate Shear Wall (SPSW) ; Dissipated Energy ; Cyclic Behaviour ; Finite Element Method ; Nonlinear Analysis ; Stiffener

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