FINITE ELEMENT ANALYSIS OF FLEXURAL BEHAVIOR OF DAMAGED RC BEAMS REINFORCED BY FRP

GAO Ziqi; ZHANG Jintao; ZHANG Hao; HAO Han; GUO Rui

doi:10.13204/j.gyjzG20110321

Volume 51 Issue 5

Sep. 2021

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GAO Ziqi, ZHANG Jintao, ZHANG Hao, HAO Han, GUO Rui. FINITE ELEMENT ANALYSIS OF FLEXURAL BEHAVIOR OF DAMAGED RC BEAMS REINFORCED BY FRP[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(5): 44-50,43. doi: 10.13204/j.gyjzG20110321

Citation:

GAO Ziqi, ZHANG Jintao, ZHANG Hao, HAO Han, GUO Rui. FINITE ELEMENT ANALYSIS OF FLEXURAL BEHAVIOR OF DAMAGED RC BEAMS REINFORCED BY FRP[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(5): 44-50,43. doi: 10.13204/j.gyjzG20110321

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FINITE ELEMENT ANALYSIS OF FLEXURAL BEHAVIOR OF DAMAGED RC BEAMS REINFORCED BY FRP

doi: 10.13204/j.gyjzG20110321

1. School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China;
2. Anhui Communications Planning and Design Institute Co., Ltd., Hefei 230088, China;
3. China Railway Zhengzhou Group Co., Ltd., Zhengzhou 450000, China

Received Date: 2020-11-03
Available Online: 2021-09-16
Publish Date: 2021-09-16

Abstract

Abstract

This paper mainly studied the flexural behavior of damaged RC beams reinforced by FRP grids. A control beam was designed for a four-point bending test in this study. Based on the test data, a finite element model for analyzing the reinforcement effect of the FRP grid was established. The flexural behavior of the reinforcement scheme and the influence of grid spacing and FRP-concrete interface treatment on the reinforcement were obtained through the FEM analysis. The results showed that the reinforcement was very effective in improving the bearing capacity of the damaged beams, and the limit load of the beam was increased by 27.4%~43.4%. There was a greatly improvement in the overall stiffness of the beams after the reinforcement. The deflection at yield was slightly reduced and the deflection at failure hardly changed. For beams with different anchoring conditions, the limit load of the unanchored beams was about 10% higher than that of the anchored beams.
- FRP grid,
- damaged RC beam,
- finite element analysis,
- flexural reinforcement

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References(14)

References

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