earticle

영어

There are several methods for strengthening the RC beams such as by using steel plate, carbon fiber plate, tendon and steel bar. This paper is an analytical study for strengthening RC beams with the high-strength bars. When strengthened RC beam reaches the yield point, the internally reinforced rebars reach the yield point, but the externally reinforced high-strength bars may not reach the yield point. In general, the strain value of the externally reinforced high-strength bars show less than that of the internally reinforced rebars. This phenomenon must be considered in the design process. If the externally reinforced high-strength bar is yielded, the design process becomes much simpler. The purpose of this study is to provide the basic data of the design equation considering the geometry of bars and initial stress. The purpose of this study is to induce to be yielded by high-strength bars by controlling geometry of high-strength bars and initial stress.