- Volume 8 Issue 5
An Experimental Study on Distribution of Ultimate Strength of Concrete-Filled Steel Tube Columns according to Concrete Strength and Section Properties Ratio
콘크리트강도 및 단면특성에 따른 콘크리트 충전강관(CFT) 기둥의 극한강도 분포에 관한 실험적 연구
- Published : 2008.10.15
Recently, to improve the load carrying capacity of column structures such as bridge piers, application to concrete-filled steel tube(CFT) type columns are increased more and more. To design the concrete-filled steel tube(CFT) columns in accuracy, influence of material and geometry properties and aspect ratio on ultimate strength of the concrete-filled steel tube column is investigated by experimental researches. In this investigation, the ultimate strength distribution of the concrete-filled steel tube column in accordance with diameter-thickness ratio(D/t) and steel-concrete area ratio(As/Ac) are clarified by the compressive tests. Futhermore, parametric experimental investigation on concrete target strength is performed. It was known from experimental observation that ultimate strength of concrete-filled steel tube column under axial compressive loading more depends on section properties of steel tube rather than concrete strength.