吉林大学学报(工学版) ›› 2009, Vol. 39 ›› Issue (增刊2): 209-0214.

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State space theoretical mode of concrete structure strengthened with CFRP sheets

LI Chun-liang1,CHENG Yong-chun2,HE Feng2   

  1. 1.School of Communication Science and Engineering, Jilin Architectural and Civil Engineering Institute, Changchun 130021, China;2.College of Transportation, Jilin University,Changchun 130022, China
  • Received:2009-04-25 Online:2009-09-30 Published:2009-09-30

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Abstract:

The theoretical model of composite beam was put forward for the concrete structure strengthened with Carbon Fiber Reinforce Polymer(CFRP) sheets based on state space theory. The state space model was established to calculate the deformation, strain and the interface shear stress of concrete structure strengthened with CFRP sheets, and the calculation results are in good agreement with the result of tests. The results show that the state space model of the concrete structure strengthened with CFRP sheets is rational after abandon the planesection assumption. And the delamination failure, rupture of CFRP and crush of concrete can be forecasted during the construction of strengthening concrete beams with CFRP loads. Meanwhile, the proposed model can provide a new design idea for the concrete structure strengthened with CFRP sheets.

Key words: road engineering, composite beam, carbon fiber reinforced polymer(CFRP) sheets, concrete beam, state space theory

CLC Number: 

  • TU375
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