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本研究将国内外设计规程中有关钢管混凝土柱轴压承载力的计算方法,用于计算钢管再生混凝土轴压短柱承载力,并将计算结果与试验结果(其中包括21根方钢管再生混凝土柱以及49根圆钢管再生混凝土柱)相比较,找出与实验值最为接近的计算公式,并利用一次二阶矩法(JC法)进行可靠度校准.结果表明:采用规范CECS28-2012给出的轴压承载力计算公式计算钢管再生混凝土短柱的轴压承载力,试件在大部分荷载作用下,能够满足《建筑结构可靠度设计统一标准》有关承载能力极限状态可靠指标的要求。
In this study, the calculation method of axial compressive bearing capacity of concrete-filled steel tubular columns in domestic and foreign design codes was used to calculate the bearing capacity of axially compressed short columns with recycled concrete filled steel tubes. The calculated results and experimental results (including 21 square steel tube recycled concrete columns And 49 steel-tube recycled concrete columns), the most approximate calculation formula was found and the reliability calibration was carried out by the first-order second-moment method (JC method) .The results showed that using the standard CECS28-2012 The calculation formula of axial compressive bearing capacity is used to calculate the axial compressive bearing capacity of concrete filled steel tubular short column. Under most of the load, the specimen can meet the requirements of the reliable index of the limit state of bearing capacity under the unified standard of reliability design of building structure.