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Fatigue Characteristic of RC Beams Strengthen with CFRP Strand sheet

Fatigue Characteristic of RC Beams Strengthen with CFRP Strand sheet. B4 Junpei Kasai. Today’s Topic. ・ Background & Purpose ・ Experiment & Result ・ Future plan. Static behavior. Background & Purpose. clear. Fatigue behavior. unclear. To make fatigue behavior clear.

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Fatigue Characteristic of RC Beams Strengthen with CFRP Strand sheet

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  1. Fatigue Characteristic of RC Beams Strengthen with CFRP Strand sheet B4 Junpei Kasai

  2. Today’s Topic ・Background & Purpose ・Experiment & Result ・Future plan

  3. Static behavior Background & Purpose clear Fatigue behavior unclear To make fatigue behavior clear To analyze residual strength after 2milion fatigue load

  4. Experiment & Result Maximum load 90kN Minimum load10kN ・Specimen

  5. Experiment & Result Figure of Crack

  6. Experiment & Result Figure of Crack

  7. Experiment & Result ・Failure model １layer Bending failure Maximum load 250kN Debonding occur at end of sheet ２layer Bending failure Maximum load 260kN Debonding occur at end of sheet

  8. Experiment & Result Load-displacement at loading point of 1 layer

  9. Experiment & Result Load-displacement at loading point of 1 2ayer

  10. Experiment & Result Maximum load Static After fatigue 1layer 278kN 250kN 2layers 315kN 260kN Enough residual strength

  11. Experiment & Result Strain of sheet

  12. Experiment & Result Strain of sheet The number of loads increase Strain of sheet increase Strain of sheet 1layer＞2layer

  13. Experiment & Result Bond stress of sheet

  14. Bond stress of sheet 1layer＞2layers Sheet debonding Bond stress move Experiment & Result

  15. ～　2009Dec24 Statictest 2009 Dec 25 ～ Analysis & Thesis Future plan Thank you for your kind attention !!

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