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Analytical Evaluation of Moment Resisting Precast Concrete Beam to Column Connections by Finite Element Method

Bakhtiari Doost, Roohollah | 2009

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 39339 (09)
  4. University: Sharif University of Technology
  5. Department: Civil Engineering
  6. Advisor(s): Khalu, Alireza
  7. Abstract:
  8. In this thesis, the behavior of proposed moment resisting precast beam-column concrete connection under cyclic and monotonic loads is investigated. In this study, the finite element models of precast and monolithic middle and corner connections are created. The results of finite element analysis under cyclic loading is verified with existing experimental results based on failure mode, ductility, energy dissipation capacity and flexural strength. Based on the results of nonlinear finite element analysis, the analytical behavior of samples is in good agreement with experimental results and finite element analysis of proposed precast connection can be replaced with supplementary tests. Then the analytical behavior of proposed precast connections is investigated based on lateral load capacity and ductility under monotonic load by changing various parameters. Column axial load ratio, connection length, stirrups spacing, column dimensions and skewed rebar in connection zone are parameters that are changed. Investigation of results shows that lateral load capacity and ductility decrease by increasing of column axial load ratio and by increasing of connection length, lateral load capacity increases but ductility of connection does not change. Furthermore, by decreasing of stirrup spacing in connection length, lateral load capacity increases but ductility of connection does not change. By increasing of column dimensions, lateral load capacity increases in middle precast connection, but lateral load capacity does not change in corner precast connection. Finally, by applying of skewed rebar in connection zone, lateral load capacity increases in middle precast connection, but in corner precast connection lateral load capacity does not change
  9. Keywords:
  10. Finite Element Method ; Nonlinear Analysis ; Moment-Resisting Connection ; Cyclic Loading ; Beam Wall Connection ; Precast Structures

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