During the construction of section steel column and concrete filled steel tube column, the inclined column space positioning may be inaccurate and affects the upper beam and column positioning.

型钢柱、钢管混凝土柱施工时容易造成斜柱空间定位不准确，影响上部梁柱定位。

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As for the limit bearing capacity formula of the concrete filled steel tube long column subjected to axial compress, we lead to the tangent modulus and the conception of metal material.

在推导钢管混凝土轴心受压长柱临界承载力公式时，论文利用材料的切线模量，分别推导了钢材和混凝土的切线模量公式。

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The numerical analyze results show that the core steel tube joint applied to concrete filled square steel tubular column and reinforced concrete beam have good mechanical property, and structure beh.

数值分析表明该节点用于方钢管混凝土柱与钢筋混凝土梁的节点，具有良好的性能且受力性能与在圆钢管混凝土结构中相似。

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