Abstract—Fiber Reinforced Polymer (FRP) composite materials are widely used to wrap compression members for improving their strength and ductility. There are several models of FRP-confined concrete in rectangular columns proposed by some researchers or codes of different countries. In this paper, an improved strength model of FRP-confined concrete in rectangular columns was presented for retrofitting existing buildings. First, a database was established by collecting 188 specimens tested by other researchers. And then, based on the database, existing models of FRP-confined concrete in rectangular columns were reviewed and evaluated in terms of the sum of square errors between experimental results and theoretical predictions. Finally, an improved model was presented, which is more accurate than existing models.
 

Cite: Lin Li, Jian Fan, Yicheng Jiang, and Yaoting Zhang, "Improved Strength Model of FRP-Confined Concrete in Rectangular Columns," International Journal of Structural and Civil Engineering Research, Vol. 4, No. 3, pp. 287-290, August 2015. doi: 10.18178/ijscer.4.3.287-290