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Analytical study of special girder moment frames using a mixed shear-flexural link element

Kazemi, M. T ; Sharif University of Technology | 2007

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  1. Type of Document: Article
  2. DOI: 10.1139/L07-037
  3. Publisher: 2007
  4. Abstract:
  5. The present paper introduces a mixed shear-flexural (VM) link element that is capable of modelling shear yielding, flexural yielding, and their interaction under monotonic and cyclic loadings. The inelastic deformations are modelled using the multisurfaces approach with dissimilar yield surfaces and a stiffness matrix with nonzero off-diagonal components in shear-flexural space. A new kinematic hardening and new non-associated flow rules are employed. A special girder, which has an open web in the middle, is introduced and modelled using the developed VM link element. It is shown that the results of analyses using the VM link element are in good agreement with those from a finite element analysis. Nonlinear dynamic analyses are performed on a benchmark ordinary moment frame (OMF) and its improved versions with special girders. The special girder moment frame (SGMF), which consists of special girders at the lower storeys and ordinary girders at the roof level, has better seismic performance. © 2007 NRC Canada
  6. Keywords:
  7. Cyclic loads ; Dynamic analysis ; Nonlinear analysis ; Stiffness matrix ; Structural frames ; Inelastic zone ; Mixed shear-flexural (VM) link element ; Ordinary moment frame ; Shear-flexural-interaction ; Special girder moment frame ; Beams and girders ; Finite element method ; Nonlinear analysis ; Seismic design ; Cyclic loading ; Deformation
  8. Source: Canadian Journal of Civil Engineering ; Volume 34, Issue 9 , 2007 , Pages 1119-1130 ; 03151468 (ISSN)
  9. URL: https://cdnsciencepub.com/doi/10.1139/l07-037