충전강관(CFT) 장주의 내력 평가에 관한 고찰

The square strength and design strength are smaller than the experimental strength of square shaped concrete filled tubular columns in a short concentrically loaded columns. In AIJ(Architectural Institute of Japan) design formulas for slender steel-concrete composite beam-columns, the superposed strength is adopted. Design formulas of SRC(Steel encas- ed Reinforced Concrete) Standard or CFT(Concrete Filled Steel Tube) Recommendation ate well predicted, but they ate so complicated to calculate In this paper, we proposed simplified method to calculate the strength of slender CFT beam-columns. Comparison with the experimental data and AIJ design formula was performed, and it was shown that proposed method predicted well and can be used as the design formula