Numerical Modelling of Concrete Beams Strengthened with Externally Bonded CFRP Fabrics, at High Temperatures

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NADERI MAHMOOD; SMEALIZADEH SIAMAK

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Paper Information

Journal: JOURNAL OF STRUCTURAL AND CONSTRUCTION ENGINEERING Year:2019 | Volume:6 | Issue:3 (26) Page(s): 71-88

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Information Journal Paper

Title

Numerical Modelling of Concrete Beams Strengthened with Externally Bonded CFRP Fabrics, at High Temperatures

Author(s)

NADERI MAHMOOD | SMEALIZADEH SIAMAK | Issue Writer Certificate

Keywords

CFRP strengtheningQ2

Numerical modellingQ2

High TemperaturesQ2

Concrete BeamsQ1

Plastic Damage ModelQ1

Abstract

The use of externally bonded fiber reinforced polymers has been proven to be an effective and efficient system for strengthening deficient concrete components and structures. This paper presents Numerical modelling of the debonding behavior of Concrete Beams, strengthened with externally bonded CFRP fabrics. This study was carried out, using the commercial package Abaqus, by employing finite element analysis. The simulation was validated against laboratory four point bending tests of nine plain Concrete Beams previously performed by the authors. The behavior of Concrete Beams with three different design concrete strength of 20, 30 and 40 MPa was investigated. These beams were strengthened by externally bonded CFRP fabrics. The temperature ranges considered were-20, +20, +50 and +80 degree Celsius. Linear elastic isotropic and orthotropic models were used for the CFRP and a cohesive bond model was used for the concrete– CFRP interface. A Plastic Damage Model was used for the concrete. In the finite element analysis similar to laboratory tests, the specimens were first heated up to elevated temperatures, and then loaded up to failure. With regard to the failure loads, load– displacement response and crack patterns, the results obtained, show good agreement with the recorded experimental data. The finite element results belonging to the thermal strains in CFRP and the stresses in the concrete were also compared with the thermal strains and stresses determined using analytical models.

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APA: Copy

NADERI, MAHMOOD, & SMEALIZADEH, SIAMAK. (2019). Numerical Modelling of Concrete Beams Strengthened with Externally Bonded CFRP Fabrics, at High Temperatures. JOURNAL OF STRUCTURAL AND CONSTRUCTION ENGINEERING, 6(3 (26) ), 71-88. SID. https://sid.ir/paper/403958/en

Vancouver: Copy

NADERI MAHMOOD, SMEALIZADEH SIAMAK. Numerical Modelling of Concrete Beams Strengthened with Externally Bonded CFRP Fabrics, at High Temperatures. JOURNAL OF STRUCTURAL AND CONSTRUCTION ENGINEERING[Internet]. 2019;6(3 (26) ):71-88. Available from: https://sid.ir/paper/403958/en

IEEE: Copy

MAHMOOD NADERI, and SIAMAK SMEALIZADEH, “Numerical Modelling of Concrete Beams Strengthened with Externally Bonded CFRP Fabrics, at High Temperatures,” JOURNAL OF STRUCTURAL AND CONSTRUCTION ENGINEERING, vol. 6, no. 3 (26) , pp. 71–88, 2019, [Online]. Available: https://sid.ir/paper/403958/en

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