M.Sc. Tezi Görüntüleme | |||||||||||||||||||||
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| Summary: Lightweight portal frames are increasingly being used in practice. However, related formula, provision and suggestions are not as precise as for those of conventional steel structures in technical literature, particularly in national and international standards. Therefore with this study, optimum connection plate design of a lightweight portal frame was aimed at by performing finite element analyses of various connection plate designs. Within the first chapter of this study being composed of four main chapters, iron-steel material, lightweight members, usage of those members as well as analysis and design methods are briefly described, some previous research related to this study are presented. In the second chapter, description of nonlinear finite element analyses of apex connection of a lightweight portal frame were performed by using Abaqus v6.12 software is given. In the third chapter, the results obtained from those analyses are discussed and the last chapter, where the results and suggestions derived from this study were presented, was followed by references and personal background. As of the results of this study, it is concluded that apex connection behaviour is highly influenced by local buckling of connection plates and excessive deformation of bolt holes. Additionally, the model with the least distance between profiles, stiffened apex plate and lipped compression plate was suggested to be the optimum design, instead of models which local buckling of apex and compression plates occurs simultaneously.
Key Words: Lightweight structures, Cold-formed steel profiles, Abaqus, Optimization. | |||||||||||||||||||||