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Parametric Studies of Seismic Behavior of Single Story Concrete Frame Equipped on Yielding Element

Alirezaei, Mehdi | 2011

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  1. Type of Document: M.Sc. Thesis
  2. Language: English
  3. Document No: 42324 (53)
  4. University: Sharif University of Technology, International Campus, Kish Island
  5. Department: Science and Engineering
  6. Advisor(s): Mofid, Massoud
  7. Abstract:
  8. In this thesis, in order to evaluate the vulnerability of concrete structures equipped with Yielding Element (YE) against earthquakes, two single story/ span concrete frames with different bay-to-height ratios (B/H<1 and B/H>1) are considered. Since the nature of earthquakes is to release energy due to tectonic movements in the earth and the nature of damages in structures depends on the rate of absorbed energy, investigating the behavior of structures are based on the energy concept which is considered as the most important way to design structures against earthquake load. In order to provide seismic resistance against earthquakes and reduce the damages in main elements, it is required to minimize the absorbed energy in these elements. One way to retrofit existing structures and seismically design new concrete structures is to use metallic yielding dampers. Metallic dampers act like a fuse and are deformed during earthquakes and after that they could be replaced. In this thesis, parametric studies are based on the static analysis which is performed to find the best place, angle and shape of these elements in the frames. Furthermore, the response of these frames against some earthquakes is presented and a comparison will be made between them. In order to model the frames under consideration, the software "OPENSEES" is used, which has the capability to consider the nonlinear behavior of all types of material
  9. Keywords:
  10. Hysteresis Energy ; X-Bracing ; Nonlinear Dynamic Analysis ; Yielding Damper

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