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- Type of Document: M.Sc. Thesis
- Language: English
- Document No: 44463 (53)
- University: Sharif University of Technology, International Campus, Kish Island
- Department: Science and Engineering
- Advisor(s): Mofid, Masoud
- Abstract:
- The Response modification factor R represents the behavior of the structure such as ductility, overstrength and the inherent redundancy. This factor shall be defined according to the type of lateral force resisting system. However, there are some complexities and/or uncertainties in codes related to the R factor according to the height, form of irregularities and structural systems. Therefore, from the scientific point of view as well as reliability, it is very clear that the R factor cannot be similar for all kinds of structures, categorized as a specific group. In this investigation, assuming a low-rise, vertically irregular structure with a heliport which has a dual structural system (shear walls or concrete core + moment resisting steel frame), is considered. Applying a complete design, including a nonlinear finite element approach, pushover analysis, and implementation of different codes, an extensive investigation on the R factor for different orientation of concrete core and/or irregularities in structure shall be performed. In addition, in some cases usage of X-bracing as a lateral load resisting system interacting with shear walls in perpendicular directions have been deeply studied. It is expected, due to this wide-ranging study, we can come up with an appropriate and reasonable point of view for the R factor, which can easily be affected in real design problems with a little change in the structural system
- Keywords:
- Strength Reduction Factor ; Ductility ; Inelastic Deformation ; Irregular Structures ; Shear Walls
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