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《Concrete》 2007-12
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Static study of strengthening damaged prestressed concrete beam with carbon fiber reinforced plastic sheet

TONG Gu-sheng(School of Civil Engineering and Architecture,East China Jiaotong University,Nancheng 330013,China)  
The flexural behavior and strength of prestressed concrete beams strengthened with CFRP were investigated experimentally and analytically.Seven prestressed concrete beams were made to study the viability of the system.Four initial damaged beam were made before they were strengthened,the other two beam were strengthened directly,and the final one is unstrengthened control beam.The Initial damage and number of FRPs layer is studied as effective parameters.The experiments show that flexural capacity and flexural stiffness of strengthened beams were increased,strength increases up to 50% could be obtained when two lay of FRPs were pasted.
【Fund】: 江西省自然科学基金资助项目(0450033)
【CateGory Index】: TU378.2
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