A second-order inelastic model for steel frames of tapered members with slender web

Jin Jun Li, Guo Qiang Li, Siu Lai Chan

Research output: Journal article publicationJournal articleAcademic researchpeer-review

21 Citations (Scopus)


A concentrated plasticity model is proposed for second-order inelastic analysis of the steel frames of tapered members with a slender web. Such significant effects as residual stresses, initial geometric imperfection, gradual section yielding at the element ends, distributed plasticity within the element and local web buckling are considered in this model. Numerical examples on tapered compact columns, prismatic beam-columns with local buckling, a prismatic frame with local buckling and a tapered frame with local buckling are studied in this paper to verify the accuracy and efficiency of the proposed analytical model. As an application, the column curves of tapered steel columns are obtained with the proposed analytical model, both excluding and including the local buckling effects of slender webs. Some meaningful conclusions are drawn in the end of this paper.
Original languageEnglish
Pages (from-to)1033-1043
Number of pages11
JournalEngineering Structures
Issue number8
Publication statusPublished - 1 Jul 2003


  • Concentrated plasticity model
  • Second-order inelastic analysis
  • Slender web
  • Steel frames
  • Tapered members

ASJC Scopus subject areas

  • Civil and Structural Engineering


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