RC beams strengthened with composite material: a limit analysis approach and experimental study

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• 作者：Limam ; Oualid ; Foret ; Gilles ; Ehrlacher ; Alain
• 关键词：Limit analysis ; Composite material ; Failure criteria ; Kinematic method ; Collapse mechanism ; Layer ; Interface
• 刊名：Composite Structures
• 出版年：2003
• 出版时间：March, 2003
• 年：2003
• 卷：59
• 期：4
• 页码：467-472
• 全文大小：210 K

文摘

This paper deals with the flexural strengthening of reinforced concrete beams by means of thin carbon fibre reinforced plastic (CFRP) plates. A simplified laminated plate model is used to describe the behaviour of three-layered plate in cylindrical bending which were subjected to third-point line loads. The upper bound theorem of limit analysis is used to approximate the ultimate load capacity for multi-layered plates and identify different collapse mechanisms. A reinforced concrete beam strengthened by CFRP is designed as a three-layered plate. Experimental results are obtained and a comparison with theoretical predictions made.