DEVELOPMENT AND VALIDATION OF FIBER MODEL FOR HIGH-STRENGTH SQUARE CONCRETE-FILLED STEEL TUBE BEAM-COLUMNS

Steel-concrete composite construction has become popular because it combines the advantages of both steel and concrete materials economically. This article presents a general fiber model that can be used to predict the monotonic and cyclic force-deformation behavior of high-strength square concrete-filled steel tube (CFT) beam-columns. The authors also present a general analytical approach for developing the critical input parameters for the fiber model, that is, the stress-strain curves for the fibers modeling the CFT cross section. Their general approach develops the fiber stress-strain curves analytically from the results of a three-dimensional nonlinear finite element analysis of a corresponding CFT segment. The authors report on the validation of their model with experimental data from 26 high-strength square CFT beam-column specimens that were tested under combined axial and monotonic or cyclic flexural loading. The results from the CFT fiber models compare reasonably accurately with the corresponding experimental results.

  • Availability:
  • Supplemental Notes:
    • For this issue of the ACI Structural Journal, the date is January/February 2005.
  • Corporate Authors:

    American Concrete Institute (ACI)

    38800 Country Club Drive
    Farmington Hills, MI  United States  48331
  • Authors:
    • Varma, A H
    • Sause, R
    • Ricles, J M
    • Li, Q
  • Publication Date: 2005-1

Language

  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00985150
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jan 31 2005 12:00AM