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On the Numerical Modeling of Semi Rigid Steel Beam to Column Connection Subjected to Monotonic and Cyclic Loading using Finite Lements Method

Mohammadi, Hamid | 2015

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 47204 (09)
  4. University: Sharif University of Technology
  5. Department: Civil Engineering
  6. Advisor(s): Mofid, Masood
  7. Abstract:
  8. To investigate the accurate performance of a structure, the knowledge of the way its connections function, is of great importance. Moreover, cognition of the actual behavior of connections which is often semi-rigid can lead to better apprehension of the actual and more accurate behavior of structures, whilst it is often considered to be pinned or fully-rigid.Therefore, in this study a new semi-rigid steel connection of beam to column will be introduced, and its behavior will be investigated using commercial finite element packages along with mathematical approximate modeling methods. One of the features of this connection is that its behavior mainly depends uponfolding of top and bottom plates, web plate, and type of connection. Appropriate ductility and high capacity of energy absorption are of the main features of these connections. In this study, finite elements method is used to model several types of connections with different dimensions, under different monotonic and cyclic loadings; then, after the moment-rotation curves are obtained using finite elements method and analytical methods, the results will be com pared. Further, using an investigation of a 2D frame with this connection, it is shown that the energy absorption capacity of the frame will be enhanced. Later, the amount of rigidity of the specimens are investigated and an expression is presented to appr oximate the rigidity of this connection
  9. Keywords:
  10. Semirigid Connection ; Modeling ; Ductility ; Cyclic Loading ; Moment-Rotation Curve ; Finite Element Method

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