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Collapse Analysis of Infilled Steel Frames by Endurance Time Method

Jamshidi Avanaki, Mohammad | 2012

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 42604 (09)
  4. University: Sharif University of Technology
  5. Department: Civil Engineering
  6. Advisor(s): Esmaeil Pourestekanchi, Homayun
  7. Abstract:
  8. In many urban and rural areas, steel frames are infilled by masonry materials such as bricks. The resulting structural system is commonly known as an infilled frame. Nonlinear analysis of infilled frames using conventional analysis methods, such as incremental dynamic analysis (IDA), requires high levels of modeling complexity and computational effort, therefore in most practical cases; the infill panel is often neglected. Such an approximation results in a high level of inconsistency in evaluation of the actual behavior (e.g. lateral strength and stiffness) of these frames. Introducing more simple and straightforward methods of analysis and design for these frames, can be a solution to this problem. The Endurance Time (ET) method is an innovative and straightforward method for dynamic loading and analysis of structures, apprehensible for standard level of seismic engineering knowledge. In this study, application of the ET procedure in collapse analysis of infilled steel frames is investigated. For this purpose, moment resisting and braced steel frame models with unreinforced masonry clay brick walls as infills is considered. Results of ET and IDA nonlinear analyses and collapse performance of these frames are discussed and compared to observe the ET method’s potential benefits and drawbacks in seismic evalua-tion of this category of frames
  9. Keywords:
  10. Endurance Time Method ; Dynamic Analysis ; Masonry Infilled Walls ; Collapse Analysis ; Time History Analysis

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