FLEXURAL CAPACITY OF STEEL-CONCRETE COMPOSITE BEAMS STRENGTHENED WITH A PRESTRESSED CFRP PLATE
Many studies have confirmed that externally-bonded carbon fibre reinforced polymer (CFRP) plate can effectively improve the stiffness and strength of steel-concrete composite beams.Base on the failure mode and the locations of the neutral axis, a close-form solution are developed to calculate the flexural capacity of the strengthened composite beams. Failure may result from rupture of the CFRP plate or crushing of the concrete plate. The analyses show the flexural capacity is not influenced by the permanent load and the prestressing force when failure results from rupture of the CFRP plate, but the flexural capacity reduced with the permanent load and increased with prestressing force when failure results from crushing of concrete. Nonlinear finite element (FE)method was used to calculate the flexural capacity of the strengthened composite beams as well. The effectiveness of adhesive and shear studs was taken into account in the analysis. Finally, experimental results were employed to validate analytical and FE results.
Strengthening CFRP Steel-concrete composite beam Flexural capacity
Jun Deng Marcus M.K.Lee Shi-Qing Li Pei-Yan Huang
School of Civil and Transportation Engineering, South China University of Technology,Guangzhou 51064 School of Civil and Transportation Engineering, South China University of Technology,Guangzhou 51064
国际会议
第十届国际结构工程青年学者研讨会(The Tenth International Symposium on Structural Engineering for Young Experts)
长沙
英文
651-656
2008-10-19（万方平台首次上网日期，不代表论文的发表时间）