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Experimental and Numerical Studies on Trapezoid Ally Corrugated Steel Shear Walls with Opening under Cyclic Loading

Yaseri Gilvaei, Majid | 2021

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  1. Type of Document: Ph.D. Dissertation
  2. Language: English
  3. Document No: 54926 (53)
  4. University: Sharif University of Technology, International Campus, Kish Island
  5. Department: Science and Engineering
  6. Advisor(s): Mofid, Masood
  7. Abstract:
  8. Steel shear wall is a lateral load resistance system, which has been taken into consideration in recent decades for designing and reinforcing high-rise buildings. This system is comprised of steel filler panel surrounded by frame members including beams and columns. Steel shear walls are presently fabricated in two types, stiffened and unstiffened. According to numerous conducted research, it can be stated that the stiffened type has better seismic performance. The use of stiffeners with a great number of executive details is required to spend more time and costs on the construction sector. In order to solve these problems, some experimental and numerical studies have been conducted on trapezoidally corrugated steel shear walls as an alternative option to be used instead of stiffeners. The need for the generation of opening in trapezoidally corrugated steel shear walls is inevitable in several building projects. Therefore, experimental and numerical studies on trapezoidally corrugated steel shear walls with opening are taken into consideration in this dissertation. For this purpose, two types of trapezoidally vertical corrugated steel shear walls on the half-scale, one-story, single-bay under quasi-static lateral loading with the absence of gravity loads are evaluated. The first type has only one large middle opening and the second one has two small side openings, where the area of one large middle opening is considered to be equal to that of two small side openings. This experimental research describes that although the stiffness, strength, energy absorption, and ductility are decreased due to the presence of opening, but the corrugated shear walls with opening similar to the corrugated shear walls without opening have a stable hysteretic behavior and can reach the relative lateral displacement of 6-7%. Also it is shown that the seismic parameters of the system are somewhat improved by considering two small side openings instead of one middle opening. After verifying numerical models with experimental outputs, the non-linear behavior of steel shear walls is assessed using finite element method. The numerical results show that with increasing the thickness of the infill plate or using stiffeners around the opening, the ultimate strength of a corrugated steel infill panel with an opening can be equal to or even more than the ultimate strength of that panel without opening. So adding stiffeners or increasing the thickness of shear plate, located inside of the frame, can be proposed as suitable method for improving the strength and initial stiffness of trapezoidally vertical corrugated steel shear walls with openings
  9. Keywords:
  10. Trapezoidally Corrugated Plate ; Lateral Resistance ; Ductility ; Opening ; Steel Plate Shear Wall (SPSW) ; Cyclic Loading ; Perforated Shear Wall

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