%0 Journal Article
%T Strengthening Design Limitations of an RC Frames Using FRP Column Wrapping Considering Column-to-Beam Strength Ratio
%J Scientia Iranica
%I Sharif University of Technology
%Z 1026-3098
%A Khaloo, A.R.
%D 2007
%\ 10/01/2007
%V 14
%N 5
%P -
%! Strengthening Design Limitations of an RC Frames Using FRP Column Wrapping Considering Column-to-Beam Strength Ratio
%R
%X The aim of this paper is to study the influence of the column-to beam strength ratio on the seismic strengthening of a column with a Fiber Reinforced Plastic (FRP) wrapping system. FRP wrapped Reinforced Concrete (RC) columns are analyzed to obtain moment-curvature curves using FRP confined concrete characteristics. A pushover analysis of a 2D model was performed on one and three-story moment-resisting frames, with different column-to-beam strength ratios. The results indicate that FRP strengthening is more efficient in frames with a low ratio of column-to-beam strength, due to the type of lateral failure mechanism of the frame. Also, high values of the column-to-beam strength ratio can be benefited by low values of the confining pressure. In case of a column strength greater than a beam strength, beyond a certain confining pressure ratio, further enhancement in performance will not be achieved. Therefore, the level of effective wrapping on frame performance enhancement is controlled by the column-to-beam strength ratio.
%U http://scientiairanica.sharif.edu/article_2875_46d359e346a3ba0a56ef799b57db27cc.pdf