• Title/Summary/Keyword: 선가력

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A Study on the Strengthening Effect of Reinforced Conctete BeamsFlexural Strengthening after Pre-loading (선가력 후 휨 보강한 RC보의 보강 효과에 관한 연구)

  • Kim, Jeong-Sup;Sin, Yong-Seok;Jo, Cheol-Hee;Kim, Kyoug-Ok
    • Journal of the Korea institute for structural maintenance and inspection
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    • v.10 no.6
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    • pp.183-190
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    • 2006
  • From the result of this research above, it may be summed up as follows. As a summary of results from each experiment, as the test body reinforced with the carbon rods was embedded inside the concrete section and made it possible uniform movement, this study has shown that it had excellent characteristics in improving the flexural strength and ductility. Also, it was considered as the carbon-steel sheet composite plate was to exert the strength more if it would complement the adherence with the concrete.

A Study on the Shear Strengthening Effect of Reinforced Concrete Beams with Structural Damage (구조적 손상을 입은 철근콘크리트 보의 전단보강 효과에 관한 연구)

  • Shin, Yong-Seok;Kim, Jeong-Hoon;Kim, Jeong-Sup;Kim, Kwang-Seok;Cho, Cheol-Hee
    • Journal of the Korea Institute of Building Construction
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    • v.8 no.5
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    • pp.43-51
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    • 2008
  • This study examines shear capacity performance and structural characteristics of reinforced concrete beam using carbon fiber sheet(CFS), g)ass fiber sheet(GFS), glass fiber steel plate(GSP) and carbon fiber bar CB) which are reinforcing materials for reinforced concrete beam in order to produce similar condition to repair and reinforce actual structure and aims to provide data available In designing and constructing reinforced concrete structures under the structural damage. This study obtains the following conclusions. After considering the shear experiment results. it was indicated that the CB reinforced test object was the best in the shear capacity improvement and ductility capacity as it was contained in the concrete and was all operated, Also, GFS reinforced test object indicated the reduced flexural capacity but good shear capacity. GSP reinforced test object had bigger reinforcing strength than other reinforcing test objects. On the other hand, it showed the lowest reinforcement effect as compared section thickness of reinforced material because it showed the bigger relativity a section thickness of reinforced material. If the adherence to the concrete is improved, it will seem to show bigger reinforcement effect.