The hoop bars confining the longitudinal reinforcement increase the strength and ductility of the column. The enhancement effects on the strength and ductility of the RC columns with rectangular cross section are represented differently depending on the degree of hoop bars reinforcement. A theoretical studies were performed using the previous equations proposed by earlier researchers. As the results of this theoretical studies, the yield strength bar and the vertical space of hoop bars are the most influenced in the strength and ductility of the columns. A square RC column than a rectangular RC column was found to receive a larger impact on the strength and ductility effect.

• 정수영(강남대학교 건축공학과 3학년) | Jung, Soo Young
• 하상수(강남대학교 건축공학과 부교수, 공학박사) | Ha, Sang Su