RELIABILITY EVALUATION AND SPECIFICATION DISCUSSION OF CFRP REINFORCED CONCRETE CIRCULAR COLUMNS UNDER AXIAL LOADS

WANG Huiqing; ZHANG Dashan; LIN Xuhua; SUN Wei

doi:10.13204/j.gyjzG20102001

Volume 51 Issue 6

Oct. 2021

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WANG Huiqing, ZHANG Dashan, LIN Xuhua, SUN Wei. RELIABILITY EVALUATION AND SPECIFICATION DISCUSSION OF CFRP REINFORCED CONCRETE CIRCULAR COLUMNS UNDER AXIAL LOADS[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(6): 206-211,216. doi: 10.13204/j.gyjzG20102001

Citation:

WANG Huiqing, ZHANG Dashan, LIN Xuhua, SUN Wei. RELIABILITY EVALUATION AND SPECIFICATION DISCUSSION OF CFRP REINFORCED CONCRETE CIRCULAR COLUMNS UNDER AXIAL LOADS[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(6): 206-211,216. doi: 10.13204/j.gyjzG20102001

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RELIABILITY EVALUATION AND SPECIFICATION DISCUSSION OF CFRP REINFORCED CONCRETE CIRCULAR COLUMNS UNDER AXIAL LOADS

doi: 10.13204/j.gyjzG20102001

1. College of Architecture and Civil Engineering, Xiamen Institute of Technology, Xiamen 361021, China;
2. College of Civil Engineering, Huaqiao University, Xiamen 361021, China

Received Date: 2020-10-20
Available Online: 2021-10-27

Abstract

Abstract

Taking the CFRP reinforced concrete circular columns as the research object, a reliability evaluation on the axial compressed members which were designed according to the Technical Code for Infrastructure Application of FRP Composites GB 50608-2010, was conducted by JC method. It was found that the diameter of the columns and concrete strength had little effect on the average reliability index. The steel strength, steel reinforcement ratio, and FRP strength all had a little effect on the average reliability index. By contrast, the FRP reinforcement ratio had an obvious effect on the reliability index, and the average reliability index indicated an increase tendency with a larger FRP reinforcement ratio. Similarly, the average reliability index increased with the increase of load effect ratio, and then became flat when the load effect ratio was larger than 2.0. The average reliability index of CFRP reinforced circular columns under axial loads were 4.40 and 4.53, corresponding to the two typical live loads of residential building and office building respectively. These reliability indexes were about 0.8 lower than the axial compressed columns designed by the Code for Design of Concrete Structures GB 50010-2010. In order to obtain the same reliability level as the axial compressed members in the current code of GB 50010-2010, some suggestions were put forward to revise the original formula provided by the code of GB 50608-2010.
- carbon fiber reinforced polymer,
- steel reinforced concrete circular columns,
- reliability evaluation,
- JC method

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References(20)

References

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