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《Journal of Building Structures》 2004-03
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Calculation of flexural capacity of RC beams strengthened with GFRP sheets

WANG Wenwei~1, ZHAO Guofan~2 1. Transportation College, Southeast University, Nanjing 210096, China; 2. School of Civil and Hydraulic Engineering, Dalian University of Technology, Dalian 116023, China  
Fourteen RC beams strengthened with glass fiber reinforced polymer(GFRP) sheets were tested. The experimental results showed that the flexural strength of the repaired beams was increased. An analytical study concerning the flexural strengthening of RC beams with externally bonded GFRP sheets was conducted according to the experimental results of fourteen RC beams. Based on their different failure modes, the calculation formulas are given. Also, this paper advances the maximum GFRP area and minimum GFRP area to avoid brittle failure of RC beams strengthened with the externally bonded GFRP sheets. At the same time, the ratio of extreme depth x_m to the depth h_f and the designed ultimate strain of GFRP sheets are presented as well. The analytical model is shown to be in good agreement with the experimental results.
【CateGory Index】: TU377.9
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