Plastic Analysis of Steel Grillages Considering Bending-Tortion Iteraction

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Rahbarnia, Bahram | 2012

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 43009 (09)
University: Sharif University of Technology
Department: Civil Engineering
Advisor(s): Kazemi, Mohammad Taghi
Abstract:
Grillage structures are used at roofs of some buildings and community halls and shopping centers and airports, or structures that used as bowers. The grillages is constructed with steel or concrete beams. In most of the carried out Researchs the twisting effect on these structures has been ignored. In this research the behavior of such structures with considering regulation and softwares limits by some simple programable assumptions is simulated. So with using MATLAB software a program extracted for grillages nonlinear analysis and its results was compared with common engineering software. In This approach in addition to pure bending, bending – torsion interaction is considered too and I shape and box-shape sections is applied for modeling. At last will be shown that there is no significant difference between effect of considering bending-torsion joints and pure bending joints at I shape sections. Also the results of considering pure bending joints is compared with the results of considering bending - torsion joints at box-shape sections and effects of various factors such as strength capacity and ductility capacity is evaluated
Keywords:
Steel Mesh ; Resistance ; Ductility ; Steel Connection ; Bending Joint

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