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Design and Fabrication Function of RBS Sample

Sahafipour Fard, Mohammad Amin | 2013

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 44850 (09)
  4. University: Sharif University of Technology
  5. Department: Civil Engineering
  6. Advisor(s): Golafshani, Ali Akbar
  7. Abstract:
  8. In order to improve the performance of structures against earthquake loads, engineers believe that both minimizing the rigidity and maximizing the ductility; can lead to minimization of the energy input of the structure. However, the minimized energy shall be depreciated as much as possible in different stories so that the damage to the main and Irreplaceable structural members remains as low as possible.
    Steel with high strength and ductility is relatively an ideal material for this purpose; however, the ductility level of this material is much higher than that is normally in use. In order to have a better utilization of the steel ductility, RBS (Ribbed Bracing System) was invented in 2007 by Gol Afshani and Associates, and its advantages were theoretically justified. This system is able to eliminate the permanent story drifts after a severe earthquake and is also capable of applying a continuous stiffness to the structure during the entire duration of the earthquake period. A template with the hydraulic performance was fabricated by A. Khani.The other advantages of the RBS system are as follows:
    • Reducing the damage in the main structural members due to the accumulation of the damages in interchangeable braces
    • Increasing the ductility of the structures
    • Increasing the behavior coefficient
    • Decreasing the levels of forces and the sections of the structural members
    • Lack of the buckling in the braces
    In this project, a mechanical model is designed and fabricated. Practically, it is not possible to test the sample at lab; however, prototyping could be done by a computer simulation modeling program, and the behavior of the sample under the tensile/compressionloadswill be reconciled with the theoretical diagrams
  9. Keywords:
  10. Construction ; Simulation ; Input Energy ; Ribbed Bracing System (RBS)

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