Theoretical Stress-Strain Model for Concrete in Steel-Reinforced Concrete Columns

Xianzhong Zhao, Fuping Wen, Tak Ming Chan, Si Cao

Research output: Journal article publicationJournal articleAcademic researchpeer-review

20 Citations (Scopus)


This paper investigated the confinement mechanism of steel-confined concrete in steel-reinforced concrete (SRC) columns. Six axially loaded SRC-core columns were tested and the corresponding structural performance data were collected and assessed. Considering the confinement mechanism of both steel-confined and hoop-confined concrete, the concrete in the SRC columns was divided into four regions: highly steel-confined concrete (HSCC), partially steel-confined concrete (PSCC), partially confined concrete (PCC), and unconfined concrete (UCC). Based on Mander's model, a theoretical stress-strain model for each concrete region was proposed and implemented in an analytical model to predict the mechanical behaviors of axially loaded SRC columns from the results of the tests described in this paper and of previous tests; satisfactory agreement was observed.

Original languageEnglish
Article number04019009
JournalJournal of Structural Engineering (United States)
Issue number4
Publication statusPublished - 1 Apr 2019


  • Confinement mechanism
  • Region partition
  • Steel-confined concrete
  • Stress-strain model

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering


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