Effect of utilizing glass fiber-reinforced polymer on flexural strengthening of RC arches

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MORADI H.; KHALOO A.R.; SHEKARCHI M.; KAZEMIAN A.

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Journal Paper

Paper Information

Journal: SCIENTIA IRANICA Year:2019 | Volume:26 | Issue:4 (Transactions A: Civil Engineering) Page(s): 2299-2309

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Title

Effect of utilizing glass fiber-reinforced polymer on flexural strengthening of RC arches

Author(s)

MORADI H. | KHALOO A.R. | SHEKARCHI M. | KAZEMIAN A. | Issue Writer Certificate

Keywords

Reinforced concrete arch

glass fiber-reinforced polymer

flexural strengthening

five-hinge mechanism

statistical analysis

Abstract

An experimental study on the flexural behavior of reinforced concrete (RC) arches strengthened with glass fiber-reinforced polymer (GFRP) layers is performed. Totally, 36 specimens including 3 un-strengthened (control) and 33 strengthened RC arches were tested under centrally concentrated point load. The variables of this study were the steel reinforcement ratios, number of GFRP layers, and location and arrangement of GFRP layers. The failure mode, load-displacement response of specimens, crack propagation patterns, and GFRP debonding were examined. The extrados strengthening method was more effective than intrados strengthening approach in improving the failure load and rigidity of the arches. However, applying excessive GFRP layers at extrados can change the failure mode of arches from flexural to shear failure. The dominant failure mode of specimens was flexural and ductile failure due to the formation of five-hinge mechanism. Generally, GFRP strengthening could augment the ultimate load carrying capacity, secant stiffness, and energy absorption capacity of arch specimens by up to about 154, 300, and 93 percent, respectively. Statistical analyses were performed to assess the level of influence of each considered parameters on the behavior of RC arches. Finally, Analytical approach predicts the experimental data on arches with five-hinge failure mechanism satisfactorily.

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APA: Copy

MORADI, H., KHALOO, A.R., SHEKARCHI, M., & KAZEMIAN, A.. (2019). Effect of utilizing glass fiber-reinforced polymer on flexural strengthening of RC arches. SCIENTIA IRANICA, 26(4 (Transactions A: Civil Engineering)), 2299-2309. SID. https://sid.ir/paper/290727/en

Vancouver: Copy

MORADI H., KHALOO A.R., SHEKARCHI M., KAZEMIAN A.. Effect of utilizing glass fiber-reinforced polymer on flexural strengthening of RC arches. SCIENTIA IRANICA[Internet]. 2019;26(4 (Transactions A: Civil Engineering)):2299-2309. Available from: https://sid.ir/paper/290727/en

IEEE: Copy

H. MORADI, A.R. KHALOO, M. SHEKARCHI, and A. KAZEMIAN, “Effect of utilizing glass fiber-reinforced polymer on flexural strengthening of RC arches,” SCIENTIA IRANICA, vol. 26, no. 4 (Transactions A: Civil Engineering), pp. 2299–2309, 2019, [Online]. Available: https://sid.ir/paper/290727/en

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