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A Survey on Conversion Coefficient of Relative Lateral Displacement of Linear Analysis to Real Relative Lateral Displacement of Structure

Akhavan Sigari Yazd, Mohammad Hossein | 2010

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 40624 (09)
  4. University: Sharif University of Technology
  5. Department: Civil Engineering
  6. Advisor(s): Khaloo, Ali Reza
  7. Abstract:
  8. In recent years, displacement is more considered in comparison with force in design of structures. For example in 2800 standard -3rd edition- it is stated that for the reason that real displacement of structure in linear analysis is not calculable; it is necessary to resonate the lateral displacement of elastic analysis with a coefficient which is related to behavior coefficient of structure. This displacement should be less than allowable limit that is noted in the code. In similar foreign codes importance factor is also noted beside behavior factor in calculation of real lateral displacement of structure. Evaluation of this coefficient for different structures, comparison with suggested coefficient of 2800 code and suggestion of a proper coefficient are goals of this research. For gaining these purposes, lateral displacement of some short and tall buildings with various lateral resisting systems (rigid frame, bracing system and complex structural system) for steel structures in linear and nonlinear analysis are studied. Linear and nonlinear analyses are done in sequent with ETABS and PERFORM softwares. With comparing drift values in these two methods it is seen that between studied parameters which are stiffness of structure, behavior coefficient, height and importance factor of structure and different kinds of bracing systems, in addition to behavior coefficient, height and importance factor of structure are also effective in resonance factor of lateral displacement. In addition it is seen that giving one coefficient for all of structural systems is not proper.


  9. Keywords:
  10. Earthquake Code 2800 ; Lateral Displacement ; Structure Behavior Coefficient ; Structure Importance Factor ; Instruction of Quake Rehabilitation

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