Computers and Concrete

  • 제13권4호
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  • Pages.517-529
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  • 2014
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  • 1598-8198(pISSN)
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  • 1598-818X(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Analytical model for CFRP strengthened circular RC column under elevated temperature

  • Rashid, Raizal S.M. (Department of Civil Engineering, Universiti Putra Malaysia) ;
  • Aboutaha, Riyad S. (L.C. Smith College of Engineering and Computer Science)
  • 투고 : 2013.09.25
  • 심사 : 2014.03.09
  • 발행 : 2014.05.30
⟨ 이전 논문 다음 논문 ⟩

초록

In order to increase the load carrying capacity and/or increase the service life of existing circular reinforced concrete bridge columns, Carbon Fiber Reinforced Polymer (CFRP) composites could be utilized. Transverse wrapping of circular concrete columns with CFRP sheets increases its axial and shear strengths. In addition, it provides good confinement to the concrete column core, which enhances the bending and compressive strength, as well as, ductility. Several experimental and analytical studies have been conducted on CFRP strengthened concrete cylinders/columns. However, there seem to be lack of thorough investigation of the effect of elevated temperatures on the response of CFRP strengthened circular concrete columns. A concrete confinement model that reflects the effects of elevated temperature on the mechanical properties of CFRP composites, and the efficiency of CFRP in strengthened concrete columns is presented. Tensile strength and modulus of CFRP under hot conditions and their effects on the concrete confinement are the primary parameters that were investigated. A modified concrete confinement model is developed and presented.

키워드

참고문헌

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피인용 문헌

  1. Strength model for heat-damaged reinforced concrete circular columns confined with carbon fibre reinforced polymer fabrics vol.34, pp.22, 2015, https://doi.org/10.1177/0731684415601901
  2. Compressive behavior of circular and square concrete column externally confined by different types of basalt fiber-reinforced polymer vol.23, pp.8, 2014, https://doi.org/10.1177/1369433219898086
  3. Design-oriented strength and strain models for GFRP-wrapped concrete vol.26, pp.3, 2014, https://doi.org/10.12989/cac.2020.26.3.293
  4. Residual load carrying capacity of reinforced concrete cylinders after heating at elevated temperature vol.2, pp.10, 2020, https://doi.org/10.1007/s42452-020-03483-7
  5. Ultimate strain models derived using a Digital Image Correlation (DIC) system for preloaded RC columns subjected to heating and cooling and confined with CFRP sheets vol.41, pp.None, 2014, https://doi.org/10.1016/j.jobe.2021.102306