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- Type of Document: M.Sc. Thesis
- Language: Farsi
- Document No: 45505 (09)
- University: Sharif University of Technology
- Department: Civil Engineering
- Advisor(s): Khonsari, Vahid
- Abstract:
- Base plates as the connecting components of steel structures to their foundations, have a crucial role in the behavior of these structures. In order to limit the thickness of base plates hence their cost within reasonable values, various types of attachments (stiffeners) are normally added to them. In this project 6 different configurations, Models, for the base plate and its attachments were considered and studied through finite element analysis. Each Model was studied under the combination of biaxial moments and a range of compressive loads including 0, 0.05 P/Py, 0.10 P/Py and 0.15 P/Py, where Py is the plastic load of the column. The moment-rotation curves of all models under various load combinations were obtained through which the stiffness of each model under the particular load combination was worked out. It was observed that as a result of adding various attachments, the rotational stiffness could increase by 2 folds. It was also observed that the addition of the moment about the weak axis has marginal effect on the stiffness about the strong axis. Besides, the stress distribution under the base plate in concrete foundation were also worked out for each case and compared with that given by the AISC. No correlation between the results of the two could be identified
- Keywords:
- Numerical Analysis ; Base Plate ; Biaxial Bending ; Column to Foundation Connection
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