Experimental Study on Strengthening RC Beams with Mid-Span Supporting Prestressed Carbon Fiber Plates

LIU Bin; WANG Husheng; YANG Jiaqi; FENG Peng; ZHANG Qirui; SU Dengyang; WANG Cheng

doi:10.13204/j.gyjzG22083007

Volume 53 Issue 3

Mar. 2023

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LIU Bin, WANG Husheng, YANG Jiaqi, FENG Peng, ZHANG Qirui, SU Dengyang, WANG Cheng. Experimental Study on Strengthening RC Beams with Mid-Span Supporting Prestressed Carbon Fiber Plates[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(3): 21-28. doi: 10.13204/j.gyjzG22083007

Citation:

LIU Bin, WANG Husheng, YANG Jiaqi, FENG Peng, ZHANG Qirui, SU Dengyang, WANG Cheng. Experimental Study on Strengthening RC Beams with Mid-Span Supporting Prestressed Carbon Fiber Plates[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(3): 21-28. doi: 10.13204/j.gyjzG22083007

Citation:

LIU Bin, WANG Husheng, YANG Jiaqi, FENG Peng, ZHANG Qirui, SU Dengyang, WANG Cheng. Experimental Study on Strengthening RC Beams with Mid-Span Supporting Prestressed Carbon Fiber Plates[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(3): 21-28. doi: 10.13204/j.gyjzG22083007

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Experimental Study on Strengthening RC Beams with Mid-Span Supporting Prestressed Carbon Fiber Plates

doi: 10.13204/j.gyjzG22083007

1. China University of Mining and Technology (Beijing), Beijing 100083, China;
2. Tsinghua University, Beijing 100084, China

Received Date: 2022-08-30

Abstract

Abstract

A series of experimental tests on prestress CFRP plate strengthened RC beams were conducted. The strengthening effect on undamaged beam and damaged beam of two types of strengthening methods, i.e., externally bonded prestressed CFRP and novel mid-span supporting prestressing technique, were investigated. The test results show that the novel strengthening method can enhance both cracking load and ultimate load effectively. The cracking load was enhanced by up to 100%, and the ultimate strength was increased by up to 48%, which had higher efficiency than the conventional method. In addition, the RC beam strengthened by the novel prestressing method had good ductility with a long yield plateau when subjected to bending. Hence, this is a valuable reference for further application of high-performance material in structural engineering.
- prestress,
- CFRP,
- concrete beams,
- strengthening

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References(20)

References

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