An experimental Study on the Confinement Effect of Concrete specimens confined by Interlocking Spirals

조합된 나선근으로 횡보강된 콘크리트의 횡보강효과

Experimental research was carried out to investigate the confinement effect of concrete specimens confined by interlocking spirals subjected to the concentric axial compressive load. Main variables are the compressive strength of concrete with 2 levels(normal and high strength), the spacing of the spiral reinforcement, the yield strength of the spiral reinforcement with 2 levels and 4 different interlocking lengths. For the same volumetric ratio, the use of interlocking spirals is not as effective as the single spirals, provided that the spirals have the same diameter.