Uniaxial Compression Behavior of Reinforced Concrete Circular Columns Confined by Low-Volumetric Ratio High-Strength Lateral Ties

낮은 체적비의 고강도 띠철근으로 구속된 철근콘크리트 원형기둥의 일축압축거동

Experimental research was conducted to investigate the behavior of RC circular columns confined by high-strength ties. Large scale columns with concrete strength 34.1 and 65.3 MPa were tested under monotonically increasing concentric compression. The test parameters included the volumetric ratio, tie arrangement, tie yield strength, and concrete compressive strength. The results indicate that high-strength concrete columns can be confined to achieve inelastic deformations usually predicted for normal-strength concrete columns. This can be done by providing increasing volumetric ratio and tie yield strength.