THE MECHANICAL BEHAVIOR EXPERIMENT AND ANALYSIS OF CONTINUOUS BEAMS STRENGTHENED WITH CARBON FIBER REINFORCED POLYMER SHEETS

Cheng Donghui; Wang Tianfeng; Yi Yamin

doi:10.13204/j.gyjz201110006

Volume 41 Issue 10

Dec. 2014

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Cheng Donghui, Wang Tianfeng, Yi Yamin. THE MECHANICAL BEHAVIOR EXPERIMENT AND ANALYSIS OF CONTINUOUS BEAMS STRENGTHENED WITH CARBON FIBER REINFORCED POLYMER SHEETS[J]. INDUSTRIAL CONSTRUCTION, 2011, 41(10): 25-28,63. doi: 10.13204/j.gyjz201110006

Citation:

Cheng Donghui, Wang Tianfeng, Yi Yamin. THE MECHANICAL BEHAVIOR EXPERIMENT AND ANALYSIS OF CONTINUOUS BEAMS STRENGTHENED WITH CARBON FIBER REINFORCED POLYMER SHEETS[J]. INDUSTRIAL CONSTRUCTION, 2011, 41(10): 25-28,63. doi: 10.13204/j.gyjz201110006

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THE MECHANICAL BEHAVIOR EXPERIMENT AND ANALYSIS OF CONTINUOUS BEAMS STRENGTHENED WITH CARBON FIBER REINFORCED POLYMER SHEETS

doi: 10.13204/j.gyjz201110006

1.
School of Civil Engineering,Northeast Forestry University,Harbin 150040,China

Received Date: 2010-09-20
Publish Date: 2011-10-20

Abstract

Abstract

In order to study the mechanical behavior of concrete continuous beams strengthened with CFRP sheets，3 two-span continuous beams were fabricated，and strengthened with CFRP sheets at each span． The test of loading on two-point was completed，from which the bearing capacity，cracks distribution，the test value of the length of plastic hinge region，curves of load-deformation and curves of internal force redistribution were obtained． The test results showed that the failure of concrete continuous beams strengthened with CFRP sheets was characterized by longtitudinal reinforcement yielded in intermediate support sections，then the longtitudinal reinforcement yielded in the middle span sections，at last carbon fiber polymer sheets were pulled off． The internal force redistribution appeared apparently in beams during loading process and the redistribution rate was over 50% in the state of ultimate bearing capacity． As CFRP confined the deflection of beams，the length of the plastic hinge region near the sections of intermediate support was reduced as compared to ordinary continuous reinforced beams．
- CFRP sheet,
- reinforced concrete continuous beam,
- strengthen,
- dead load test,
- bearing capacity

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References(10)

References

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