EXPERIMENTAL STUDY AND BEARING CAPACITY ANALYSIS OF RC TWO-WAY SLABS STRENGTHENED WITH FRP STRIPS

Guo Zhanggen; Cao Shuangyin; Wang Anbao; Sun Weimin; Han Baoquan

doi:10.13204/j.gyjz200908006

Volume 39 Issue 8

Dec. 2014

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Guo Zhanggen, Cao Shuangyin, Wang Anbao, Sun Weimin, Han Baoquan. EXPERIMENTAL STUDY AND BEARING CAPACITY ANALYSIS OF RC TWO-WAY SLABS STRENGTHENED WITH FRP STRIPS[J]. INDUSTRIAL CONSTRUCTION, 2009, 39(8): 20-24,19. doi: 10.13204/j.gyjz200908006

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EXPERIMENTAL STUDY AND BEARING CAPACITY ANALYSIS OF RC TWO-WAY SLABS STRENGTHENED WITH FRP STRIPS

doi: 10.13204/j.gyjz200908006

1.
1. College of Civil Engineering,Nanjing University of Technology,Nanjing 210009,China;
2.
2. College of Civil Engineering,Southeast University,Nanjing 210096,China;
3.
3. The Engineering Design &Research Academy of Canbao,Beijing 100850,China

Received Date: 2008-09-01
Publish Date: 2009-08-20

Abstract

Abstract

It is presented an experimental study on 9 pieces of simple supported RC two-way slabs strengthened with external bonded glass fiber reinforced polymer(GFRP) strips.The cracking behavior,deformation behavior,failure characteristic and mechanism and ultimate bearing capacity of strengthened RC two-way slabs were studied.The test results indicated that the GFRP strips were effective in appreciably improving the cracking behavior and deflection behavior and increasing the flexural stiffness,cracking load and ultimate bearing capacity of the strengthened slabs.But the ductility of the strengthened slabs was reduced.The yield-line failure modes of strengthened RC two-way slabs were analyzed based on the experimental results.Based on the regression of test results,the maximum strain of FRP under two-way loading is obtained.By adopting of yield-line theory,a calculation formula for the determination of the ultimate capacity of the strengthened slabs was obtained.The analytical results are in good agreement with the test results.This study may be a reference for actual strengthening projects.
- glass fiber,
- strengthening,
- RC two-way slabs,
- debonding,
- yield-line theory

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References(12)

References

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