Strengthening reinforced concrete beams using prestressed glass fiber-reinforced polymer-Part II:Ana

• 作 者: HUNG Chien-hsing YEN Tsong WU Jong-hwei
• 机 构: Department of Civil Engineering,Department of Civil Engineering,Department of Civil Engineering Nat
• 出 处: Journal of Zhejiang University Science A(Science in Engineer
• 发表日期: 2004年期
• 关键词: reinforced GFRP shaped nominal compressive ultimate resultant sheets bonding str

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.

Strengthening reinforced concrete (RC) 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, RC beams, RC beams with GFRP fiber-reinforced polymer) sheets, and RC 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 that of the beams without polymer sheets. The load-carrying capacities of beams with PGFRP sheets were greater than those of beams with polymer 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 RC and PC (prestressed concrete) theory. The analytical results accorded with the test results. It is suggested that this analytical m ethod be used for analyzing and designing R. c beams strengthened using GFRP or PGFRP sheets.