Effect of CFRP Sheet Length on the Behavior of HSC Continuous Beam

Abstract

This article is focused on the behavior of the high strength concrete continuous beam strengthened with carbon fiber-reinforced polymer (CFRP) sheet with different CFRP sheet lengths. Three full-scale continuous beams are analyzed under two points load, and the data of analysis are compared with the experimental data provided by other researchers. ANSYS V.11 program is used in finite element analysis, and the results obtained from analysis give good agreement with experimental data with respect to load–deflection curve, ultimate strength, and the crack patterns. The length of CFRP sheet is changed in the negative and positive regions. The results showed that the ultimate strength of the beam was reached when the value of Lsheet/ Lspan reaches 1.0, and when the value decreases, the ultimate strength of beam also decreases a little (1.4%), but when it decreases less than 0.6, the ultimate strength also decreases a lot (15%).