中心壓軸力을 받는 高强度 鐵筋콘크리트 기둥의 耐力과 延性에 關한 실험적 硏究 = An Experimental Study on Strength and Ductility of High-Strength Reinforced Concrete Column under Uniaxial Loads

다국어 초록 (Multilingual Abstract)

A study on the behavior of short reinforced concrete columns was experimently described. Twenty-four concrete columns, with 20cm square and 60cm height, containing 8 longitudinal steel bars and different the amount of ties, spacing and concrete strengths, were subjected to concentric load by failure.
Test results indicated that 1) It is incompatible in high-strength concrete to arrange stirrups to the AIK code of D/2 throughout the example of 10cm stirrup spacing following AIK codes. 2) As the amount of stirrup increased, the strength and ductily of reinforced concrete column improved. 3) As the concrete strength is high, the effect of the was reduced. 4) If strength enhancement factors increased, strain at maximum load also does and ductility ratios does almost linearliary. 5) The rate of strength enhancement factor does well with the modified kent & Park's theory. 6) As to the result of calculating the effective confined area which is suggested in Sheikh & Uzumeri's theory, the middle vertical steel is effective, only if the stirrups are arranged with spacing of 3cm.