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Performance of Steel Beam Connections with Elliptical Opening in Beam Web

Taghinia Hejabi, Arash | 2014

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 45848 (09)
  4. University: Sharif University of Technology
  5. Department: Civil Engineering
  6. Advisor(s): Kazemi, Mohammad Taghi
  7. Abstract:
  8. After the 1994 Northridge earthquake when investigations show clear results for brittle failure near Beam-Column rigid Connections, research on these connections begun and various theories were suggested for better performance under cyclic loads. One of the appropriate ways is shifting yield beam location from beam-column connection to the beams only. Reducing the capacity of the beam through the beam flange or web far enough from the column, creating special ductile region in the beam. In this thesis, weakening is made by creating an elliptical opening in web beams. If the correct design criteria for this type of connection are suggested, it can satisfy the "weak beam - strong column" and "strong connection – weak members ". In order to design properly, this thesis analyzes the opening level, the opening location, the ratio of the major diameter to the minor diameter of the ellipse and moreover spans length will be discussed. Continuing to study the behavior of this type of connection under cyclic loads and their hysteresis diagrams with stress contours will be drawn. In order to design proper connection, the interaction between shear and moment is suggested. Finally, we study the performance of the connection in an example of frame and compare this connection with its normal one and show the improvement of the connection under cyclic loads
  9. Keywords:
  10. Beam Wall Connection ; Cyclic Loads Effects ; Beam Column Connection ; Beam Will an Elliptical Opening in Web ; Special Regional Ductil ; Shear-Moment Interaction

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