| Strengthening reinforced concrete beams using prestressed glass fiber-reinforced polymer-Part II:Analytical study |
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| 作者姓名： | HUNG Chien-hsing YEN Tsong WU Jong-hwei |
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| 作者单位： | Department of Civil Engineering，Department of Civil Engineering，Department of Civil Engineering National Chung-Hsing University，40227，Taiwan，China，National Chung-Hsing University，40227，Taiwan，China，National Chung-Hsing University，40227，Taiwan，China |
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| 摘 要： | INTRODUCTION When the flexural load-carrying capacities of existing R. C. or P. C. structures are not sufficient for the service loads, structural strengthening becomes necessary. Using steel plates to strengthen concrete members is a traditional method (Raithby, 1980) and is still an important and popular way at the present time. Fiber-reinforced polymer (FRP) sheets and plates have been used recently as an alternative to steel plates for strengthening concrete structures be-cause th…
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Strengthening reinforced concrete beams using prestressed glass fiber-reinforced polymer-Part II: Analytical study |
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| HUNG Chien-hsing,YEN Tsong,WU Jong-hwei.Strengthening reinforced concrete beams using prestressed glass fiber-reinforced polymer-Part II:Analytical study[J].Journal of Zhejiang University Science,2005(8). |
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| Authors: | HUANG Yue-lin? HUNG Chien-hsing YEN Tsong WU Jong-hwei LIN Yiching |
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| Abstract: | Strengthening reinforced concrete (R. C.) beams using prestressed glass fiber-reinforced polymer (PGFRP) was studied experimentally as described in Part I of this paper (Huang et al., 2005). In that paper, R. C. beams, R. C. beams with GFRP (glass fiber-reinforced polymer) sheets, and R. C. beams with PGFRP sheets were tested in both under-strengthened and over-strengthened cases. The test results showed that the load-carrying capacities (ultimate loads) of the beams with GFRP sheets were greater than those of the beams without polymer sheets. The load-carrying capacities of beams with PGFRP sheets were greater than those of beams with GFRP sheets. The objective of this work is to develop an analytical method to compute all of these load-carrying capacities. This analytical method is independent of the experiments and based only on the traditional R. C. and P. C. (prestressed concrete) theory. The analytical results accorded with the test results. It is suggested that this analytical method be used for analyzing and designing R. C. beams strengthened using GFRP or PGFRP sheets. |
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| Keywords: | Analytical analysis Glass fiber-reinforced polymer Prestressed glass fiber-reinforced polymer R C beams |
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