Loading...

Numerical Study of the Effect of Reduced Beam Section on the Behavior of Steel-Concrete Composite Beam-to-Column Joints

Moroosi, Mohammad | 2019

467 Viewed
  1. Type of Document: M.Sc. Thesis
  2. Language: English
  3. Document No: 52789 (53)
  4. University: Sharif University of Technology, International Campus, Kish Island
  5. Department: Science and Engineering
  6. Advisor(s): Mofid, Masoud
  7. Abstract:
  8. In this research, factors affecting the behavior of reduced-cross section steel (RBS) connection to the compound column (CFT) has been investigated. After verifying the accuracy of the numerical simulations performed by finite element software, with a compatible three-dimensional model, several steel beam-to-column connections are modeled to the composite column and the distance effect of the reduced cross section on the column and reduction radius was studied on the behavior of the beam connection with the cross section reduced to the composite column. The results show that in all connections, in which the cross section of the beam is reduced, compared to the connections in which the beam is not reduced, the final resistance moment and the absorption and dissipation capacity of the connection energy decreased and the connection efficiency has increased. Also, in a fixed cutting radius, increasing the distance between the initially reduced region from the column, the final resistance moment, the efficiency, and the absorption and dissipation of the connection increases the energy. In addition, it was observed that at a fixed initial distance area, increasing the depth of the cutting, the final resistance moment and the absorption and dissipation capacity of the connection energy decreased and the connection efficiency increased.Also, in order to investigate the behavior of these connections under the influence of seismic loading and the influence of structural members on the performance of these joints, an 8-story frame with a composite column and a reduced steel beam in two states (the beam without a reduced cross section and the beam with reduced cross section) was modeled by Opensees software and analyzed by pushover analysis. The results show that the use of RBS connections reduces the maximum frame cut tolerance and increases the ductility and coefficient of the frame behavior
  9. Keywords:
  10. Efficiency ; Pushover Analysis ; Energy Absorption ; Energy Dissipation ; Replaceable Reduced Beam Section (RRBS) ; Concrete Filled Steel Tubes (CFT) ; Structure Behavior Coefficient ; Final Resistance Moment

 Digital Object List

 Bookmark

No TOC