Stress - Strain behaviour of high-strength concrete columns confined by low-volumetric ratio rectangular ties

K. N. Hong*, M. Akiyama, S. T. Yi, M. Suzuki

*この研究の対応する著者

研究成果: Article査読

18 被引用数 (Scopus)

抄録

Available test results and stress - strain models for poorly confined high-strength columns, more specifically for columns with a tie volumetric ratio smaller than 2·0%, are scarce. This paper presents test results loaded in the axial direction for square reinforced concrete (RC) columns confined by various volumetric ratio lateral ties including low volumetric ratio. Test variables include concrete compressive strength, tie yield strength, tie arrangement type and tie volumetric ratio. Local strains are measured using strain gauges bonded to an acryl rod. For square RC columns confined by lateral ties, the confinement effect was improved by changing tie arrangement type from type A to type B. A method to compute the stress in lateral ties at the concrete peak strength is proposed, as well as a new stress - strain model for the confined concrete. The model shows good agreement with stress - strain relationships established experimentally over a wide range of confinement parameters.

本文言語English
ページ(範囲)101-115
ページ数15
ジャーナルMagazine of Concrete Research
58
2
DOI
出版ステータスPublished - 2006 3月
外部発表はい

ASJC Scopus subject areas

  • 土木構造工学
  • 建築および建設
  • 材料科学(全般)

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