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On the Parametric Study of Tall Buildings with Different Lateral Force Resisting Systems

Jorjani, Abdullah | 2010

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  1. Type of Document: M.Sc. Thesis
  2. Language: English
  3. Document No: 40468 (53)
  4. University: Sharif University of Technology, International Campus, Kish Island
  5. Department: Science and Engineering
  6. Advisor(s): Mofid, Massoud
  7. Abstract:
  8. General tall buildings consist of different types of structural systems, such as moment resisting frames, with and without shear walls, braces and outriggers. These types of structure have been widely analyzed by many researchers. However, only a few publications are available on the comparison of these structural systems with different stories. In this investigation five types of common structural systems including special moment resisting frame(SMRF), pin structure plus brace, pin structure plus shear wall, SMRF plus brace and SMRF plus shear wall are studied and by doing linear dynamic analysis, a criterion for both lateral displacement and steel tonnage of structures was presented. Moreover, the seismic behavior factor (R) was determined for SMRF and SMRF plus bracing buildings and compared with code suggested figures. The R factor components including ductility reduction factor and over strength factor were extracted from inelastic pushover analyses. The effect of height of the buildings that influencing the value of R factor, was also studied. It is found that the results of moment resisting frame are not in agreement with code suggested figures. However, the height of the buildings has a profound effect on the R factor, as it directly affects the ductility capacity of the dual system
  9. Keywords:
  10. Strength Reduction Factor ; Pushover Analysis ; High Buildings ; Nonlinear Static Analysis ; Outrigger Braced

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