方钢管橡胶混凝土短柱的轴压力学性能试验

为了研究钢管橡胶混凝土柱的轴压力学性能,对8个方钢管橡胶混凝土短柱进行轴压试验;探讨橡胶粉体积取代率和橡胶粉粒径对其力学性能的影响,给出了方钢管橡胶混凝土轴压承载力计算公式.结果表明:随着橡胶粉体积取代率的增加,方钢管橡胶混凝土极限承载力和刚度均有下降的趋势;随着橡胶粉粒径的增大,方钢管橡胶混凝土极限承载力和刚度也有所下降;由本文给出的轴压承载力计算公式所得到的计算结果与试验结果总体上较为吻合,可用来预测方钢管橡胶混凝土的截面强度.

Mechanical Properties of Rubber Concrete-Filled Square Steel Tubular Stub Columns Subjected to Axial Loading

Experiments were carried out on eight rubber concrete-filled square steel tubular stub columns subjected to axial loading to study the influence of the rubber replacing ratio and rubber particle size on the compression mechanical properties of the columns. A simplified formula is proposed for calculating the axial bearing capacity of the columns. The test results show that the compressive strength and stiffness of the columns decrease with the increase of both rubber replacing ratio and rubber particle size. The simulation results are consistent with the experimental data, demonstrating that the formula can reasonably evaluate the ultimate bearing capacity of rubber concrete-filled steel tubular stub columns.