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对轴力作用下钢管短柱的性能和强度进行了试验和数值分析。对包括20个圆形和方形钢管混凝土短柱在内的40个构件进行了试验,以分析其在轴压作用下的破坏模式和轴向承载强度。同时也对管的径(宽)厚比和混凝土的抗压强度的影响进行了分析。对钢管混凝土柱中管的高径(宽)比的影响进行分析,以探究钢管和混凝土之间的粘结和摩擦对钢管混凝土柱性能的影响。利用钢管的弹塑性分析研究轴压下短柱的受力机制。提出了公式用以预测钢管混凝土短柱的极限轴向承载强度,并将预测结果与试验结果进行了对比。
The performance and strength of short steel tube columns under axial force were tested and analyzed. Forty members, including 20 circular and square CFST columns, were tested to analyze the failure mode and the axial bearing strength under axial compression. At the same time, the influence of pipe diameter-width ratio and concrete compressive strength is also analyzed. The influence of the pipe diameter (width) ratio on the concrete-filled steel tubular column is analyzed to investigate the effect of the bond and friction between the steel pipe and the concrete on the performance of the concrete filled steel tubular column. Study on the Mechanical Mechanism of Short Column under Axial Pressurization by Using Elastoplastic Analysis of Steel Tube. The formula is proposed to predict the ultimate axial bearing strength of CFST short columns. The predicted results are compared with the experimental results.