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Study of the Behaviour of Two-Dimensional Steel Moment Frames Equipped with Frictional Connections

Davarpanah, Mohammad Reza | 2020

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 53610 (09)
  4. University: Sharif University of Technology
  5. Department: Civil Engineering
  6. Advisor(s): Khonsari, Vahid
  7. Abstract:
  8. Occurrence of earthquakes constantly has and still causes damage, human casualties and financial loss around the globe. Therefore finding a solution which enables structures to withstand destructive earthquakes while sustaining the least possible damage to their primary elements, would prove invaluable. In conventional connections of moment-resisting frames, dissipation of seismic energy is accomplished by development of plastic deformations at pre-determined hinge locations on beam and columns, which means damage to these elements is deemed both reasonable and acceptable. However, recently “damage avoidance” principle has recieved close attention, where non-linear behaviour manifests itself not in the form of plastic and residual deformations, rather by installation of energy dissipation devices (e.g. frictional systems) in particular locations of the structural frame. Frictional connections (sliding hinge joints) are an example of these devices that reduce the cost of repair. In this research, dynamic analysis of a number of 3, 6, 9 and 12–storey frames with 3 and 4 bays has been carried out under Kobe and Landers earthquakes, and the difference between the behaviour of these frames and their counterparts with rigid joints has been investigated. Results indicate that the sliding hinge joints generally cause reduction of forces and moments acting on structural elements, as well as an improvement in the capability of the frame to dissipate energy. Furthermore, the frames equipped with these connections, undergo lower amounts of displacements and deformations in their various parts
  9. Keywords:
  10. Plastic Deformation ; Energy Dissipation ; Repair Loss ; Bending Joint ; Sliding Hinge Joint ; Frictional Moment Connection ; Damage Avoidance

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