Experimental Analysis of Shear Repair for Reinforced Concrete Beams with Prestressed GFRP Plate Bonding
Strengthening RC beams bonded with Fiber-reinforced-polymer(FRP), which can increase the safety capacity and ultimate load capacity for engineering structure, has become an attractive safety strengthening in the field of engineering structure in the recent years. After the pretensioned glass-fiber-reinforced-polymer (GFRP) plates were bonded on the tension face of RC beams, two distributing kinds of GFRP plates were bonded on the sides of the beams to improve shear capacity of RC beams. The pretress technology was described before results obtained during the application and release of the prestress, and subsequently four bending monotonic testing to failure was presented. Experimental data on strength, steel strain, GFRP strain, deflection, failure modes, and crack modes of beams were obtained, and comparisons between the different shear repair schemes and the reference beams are made. Experimental results indicate that GFRP bonded on the sides can restrict the propagation of shear crack, and failure mode is changed. Concrete beam with equivalent FRP bonded on sides has higher ratio of strengthening effect to cost under the same strengthening level.
structure engineering RC beams GFRP plate prestress shear repair safety capacity
WANG Xing-guo DING Ya-hong ZENG Xian-tao ZHOU Chao-yang
School of Civil Engineering and Architecture, Central South University, Changsha,410075, Hunan, Chin Department of Civil Engineering, Henan Polytechnic University, Jiaozuo,454000, Henan, China
国际会议
The 2007 International Symposium on Safety Science and Technology(2007采矿科学与安全技术国际学术会议)
河南焦作
英文
2794-2799
2007-04-17（万方平台首次上网日期，不代表论文的发表时间）