Prediction of Flexural Behavior of Degraded Beam Repaired and Strengthened by CFRP Sheets Using Finite Element Method

DOI: 10.14416/j.ind.tech.2023.12.008

Authors

  • Supitcharya Areemit Department of Civil Engineering, Faculty of Engineering, Thammasat University Rangsit Campus
  • Sayan Sirimontree Department of Civil Engineering, Faculty of Engineering, Thammasat University Rangsit Campus
  • Sutthahathai Potinamtong Department of Civil Engineering, Faculty of Engineering, Thammasat University Rangsit Campus
  • Chanachai Thongchom Department of Civil Engineering, Faculty of Engineering, Thammasat University Rangsit Campus

Keywords:

Finite Element Method, Reinforced Concrete Beam, Degraded, Strengthen, Carbon Fiber Plate

Abstract

The paper presents the prediction of the flexural behavior of deteriorated concrete beams reinforced with carbon fiber sheets by a finite element model. The program ANSYS was chosen for the analysis. The results from the finite element model in terms of the load-deflection relationship are compared to results tested by the previous researcher, it was found that analytical results consistent with test results. Therefore, the model can effectively predict the flexural behavior of deteriorated reinforced concrete beams strengthened by carbon fiber sheets. The developed finite element model was used to analyze the effect of other variables on the beam flexural behavior, namely the compressive strength of concrete, tensile strength of reinforcing steel, and number of carbon fiber sheets. The results show that the effect of concrete compressive was not significant for maximum carrying load capacity for beams in all cases. The tensile strength of steel has a significant effect on the load-carrying capacity. As the number of CFRP layers has been increased, the deflection of the degraded reinforced concrete beam repaired and strengthened with CFRP sheet decreased and load load-carrying capacity of the beam significantly increased.

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Published

2023-12-25

Issue

Vol. 19 No. 3 (2023): September-December

Section

บทความวิจัย (Research article)

License

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

ผลงานวิจัยและบทความวิชาการที่ปรากฏในวารสารนี้ เป็นความคิดเห็นอิสระของผู้เขียน ผู้เขียนจะต้องเป็นผู้รับผิดชอบต่อผลทางกฎหมายใด ๆ ที่อาจจะเกิดขึ้นจากบทความนั้น กองบรรณาธิการและคณะจัดทำวารสารฯไม่จำเป็นต้องเห็นด้วยเสมอไป