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作者:

Jiang, Xuan'ang (Jiang, Xuan'ang.) | Jin, Liu (Jin, Liu.) (学者:金浏) | Qin, Peng (Qin, Peng.) | Xia, Maoxin (Xia, Maoxin.) | Du, Xiuli (Du, Xiuli.)

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EI Scopus SCIE

摘要:

CFRP (Carbon Fiber Reinforced Plastics) debonding jeopardizes structural reinforcement in engineering projects. Anchoring CFRP paste is crucial for efficient shear strengthening. This study investigates the anchoring effect on shear resistance in nine CFRP U-wrapped concrete beams, varying shear span-to-depth ratios (1.0, 1.5, 2.0), and depths from 300 mm to 900 mm. Concurrently, nine unanchored beams and nine plain concrete beams were included in the comparison, considering the influence of beam depth and shear span ratio, referencing the prior research of Jiang et al. (2022). The evaluation of the shear contribution of CFRP with different sizes, particularly in scenarios involving large dimensions and diverse shear span ratios, was conducted. The test results revealed that the anchoring effect is most pronounced in small-scale beams with a large shear span ratio, demonstrating an improvement of over 60% compared to the CFRP shear-strengthened beam without anchoring. In contrast to beams without CFRP wrapping, the shear performance was enhanced by approximately 90%. Additionally, the study analyzed and compared the calculation formulas of shear capacity from different national specifications. Ultimately, a calculation method for CFRP shear resistance was established and its accuracy was verified.

关键词:

Shear-span ratio Shear failure Anchored beam Size effect Shear contribution

作者机构:

  • [ 1 ] [Jiang, Xuan'ang]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing, Peoples R China
  • [ 2 ] [Jin, Liu]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing, Peoples R China
  • [ 3 ] [Qin, Peng]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing, Peoples R China
  • [ 4 ] [Xia, Maoxin]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing, Peoples R China
  • [ 5 ] [Du, Xiuli]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing, Peoples R China
  • [ 6 ] [Jin, Liu]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing 100124, Peoples R China

通讯作者信息:

  • 金浏

    [Jin, Liu]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing 100124, Peoples R China

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来源 :

MAGAZINE OF CONCRETE RESEARCH

ISSN: 0024-9831

年份: 2024

2 . 7 0 0

JCR@2022

被引次数:

WoS核心集被引频次:

SCOPUS被引频次: 1

ESI高被引论文在榜: 0 展开所有

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