Experimental Research on Shear Fatigue Performance of Concrete Beams Reinforced with CFRP Strip Stirrups

DING Xiaobo; WU Meizhong; FANG Wujun; YUAN Fang; GUO Shijie; LI Weiwen; TANG Shiying

doi:10.13204/j.gyjzG22081906

Volume 53 Issue 6

Jun. 2023

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DING Xiaobo, WU Meizhong, FANG Wujun, YUAN Fang, GUO Shijie, LI Weiwen, TANG Shiying. Experimental Research on Shear Fatigue Performance of Concrete Beams Reinforced with CFRP Strip Stirrups[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(6): 202-208,42. doi: 10.13204/j.gyjzG22081906

Citation:

DING Xiaobo, WU Meizhong, FANG Wujun, YUAN Fang, GUO Shijie, LI Weiwen, TANG Shiying. Experimental Research on Shear Fatigue Performance of Concrete Beams Reinforced with CFRP Strip Stirrups[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(6): 202-208,42. doi: 10.13204/j.gyjzG22081906

Citation:

DING Xiaobo, WU Meizhong, FANG Wujun, YUAN Fang, GUO Shijie, LI Weiwen, TANG Shiying. Experimental Research on Shear Fatigue Performance of Concrete Beams Reinforced with CFRP Strip Stirrups[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(6): 202-208,42. doi: 10.13204/j.gyjzG22081906

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Experimental Research on Shear Fatigue Performance of Concrete Beams Reinforced with CFRP Strip Stirrups

doi: 10.13204/j.gyjzG22081906

1. College of Civil and Transportation Engineering, Shenzhen University, Shenzhen 518060, China;
2. Central Research Institute of Building and Construction(Shenzhen) Co., Ltd., MCC Group, Shenzhen 518055, China

Received Date: 2022-08-19
Available Online: 2023-08-18

Abstract

Abstract

In order to study the shear fatigue performance of concrete beams using CFRP strips instead of steel stirrups, constant-amplitude fatigue experiment was carried out on 4 concrete beams reinforced with CFRP strip stirrups and 2 concrete beams with steel stirrups. The effects of shear-span ratio (a/d=1.0, 2.5) and the configuration way of CFRP strips on the shear fatigue performance of the concrete beams were investigated. The results showed that the fatigue life of beams with CFRP strip stirrups was much higher than that of reinforced concrete beams, the beams with CFRP strip stirrups were not damaged after being subjected to more than 2 million cycles of cyclic loading under equal-amplitude fatigue loading conditions. Moreover, compared with the reinforced concrate beams, the residual deflection and stirrup strain of the beams reinforced with CFRP strip stirrups showed a better performance. Based on the existing shear damage theory and the truss-arch model, the maximum strain of CFRP strip stirrups under cyclic loading was predicted, and results were in good agreement with the test data. Therefore, using CFRP strip stirrups instead of ordinary steel stirrups could effectively improve the shear resistance of concrete beams under fatigue loading.
- fatigue performance,
- shear performance,
- CFRP,
- concrete beams,
- stirrups

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References(23)

References

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