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An Investigation on the Torsional Effects of Asymmetrically Distributed Shear Walls

Ghasemi, Majid | 2014

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 46699 (09)
  4. University: Sharif University of Technology
  5. Department: Civil Engineering
  6. Advisor(s): Moghaddam, Hassan
  7. Abstract:
  8. By investigating reports of severe and destructive earthquakes of the past years we have realized that shear-wall structures most of the times had better seismic performance and more reliability than moment resistance frames. Asymmetrical arrangement of shear walls due to architectural limitations caused distortions in the structure. On the other hand, seismic regulation don’t compliance existence of twisting moment in the structures. What was said are all the most important reasons for not employing asymmetric shear wall sets in the structures by designers. The purpose of this study is to compare the seismic behavior of symmetric moment frame structures with seismic behavior of symmetric moment frame structure include asymmetric shear wall sets in severe real earthquakes. Nonlinear dynamic analysis has been done to compare seismic behavior of two systems. Comparison of the two systems analysis out put showed that, existing of shear walls although with asymmetrical arrangement, reduced the structural displacement response that means the second system had better seismic performance. Deformation reduction appeared in both chord-rotation and relative displacement of stories. Based on the evidence, structures although with asymmetric arrangement of shear walls have better seismic performance than structure with moment frame system
  9. Keywords:
  10. Torsion ; Eccentricity ; Performance Based Design ; Asymmetric Shear Walls ; Shear-Wall Structures

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