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Numerical and Experimental Evaluation of Steel Moment Resisting Frames with Shear Fuse

Mahmoudi, Farid | 2016

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  1. Type of Document: M.Sc. Thesis
  2. Language: English
  3. Document No: 48539 (09)
  4. University: Sharif University of Technology
  5. Department: Civil Engineering
  6. Advisor(s): Mohtasham Dolatshahi, Kiarash; Mahsuli, Mojtaba
  7. Abstract:
  8. This paper puts forward an innovative energy dissipation system in steel moment resisting frames, and presents its experimental and numerical studies. In the proposed system, a replaceable beam with a smaller cross-section than that of the main beam is placed at the mid span of the beam designed to act as a shear fuse. This shifts the location of the plastic hinging from the ends of the beam to the middle since the shear fuse yields in shear prior to the flexural yielding of the main beam. This system eliminates the need to comply with the rigorous limitation on the beam span-to-depth ratio that is proposed by seismic design codes to ensure the formation of plastic hinges at the two ends of the beam. Moreover, this system enjoys an increase in the amount of dissipated seismic energy and a more stable hysteresis behavior. This is confirmed by the results of the laboratory experiment, in which the proposed system demonstrated a plastic deformation capacity twice that of the regular moment resisting frames. Finally, the system increases the resilience of the building as the shear fuse is readily replaceable after an earthquake. Numerical models in ABAQUS are produced and calibrated to the experimental data for further analysis of the proposed system
  9. Keywords:
  10. Moment Steel Frames ; Experimental Evaluation ; Replacing ; Shear Fuse ; Short Span Frame

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