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本文报导了9个钢管混凝土空心短柱轴压试验的结果。试验参数为空心率,即开孔直径d与核心混凝土直径D_0之比值。试验结果表明钢管混凝土空心柱与实心柱的基本性能相类似。随着空心率的增大,柱的极限承载力和变形能力都不断减弱。用极限平衡法推导了钢管混凝土空心柱的极限承载能力计算公式。公式计算结果与试验值符合良好。
This paper reports the results of axial compression tests on nine hollow concrete-filled steel tubular columns. The test parameter is the hollow ratio, ie the ratio of the opening diameter d to the core concrete diameter D_0. The test results show that the basic properties of the hollow concrete-filled steel tubular columns are similar to those of solid columns. With the increase of the hollow rate, the ultimate bearing capacity and deformability of the column are constantly weakened. The limit equilibrium method was used to derive the formula for the ultimate bearing capacity of hollow steel tube columns. The calculated results of the formula are in good agreement with the experimental values.