CFRP圆钢管约束再生混凝土轴压短柱试验研究

Experimental research on behavior of CFRP circular steel tubular confined recycled aggregate concrete columns under axial compression

为了进一步在实际工程中推广应用再生混凝土,进行了七根CFRP圆钢管约束再生混凝土短柱的轴压性能试验。分析了再生混凝土取代率、包裹方式对CFRP圆钢管约束再生混凝土短柱的影响。试验结果表明:随着再生混凝土取代率的增加,CFRP圆钢管约束再生混凝土短柱的承载力不断降低;全包裹的CFRP圆钢管约束再生混凝土短柱构件承载力明显高于三条带包裹。

In order to further promote the use in practice of recycled aggregate concrete ,axial compression tests were carried out for 7 CFRP circular steel tubular confined recycled aggregate concrete columns.The influence of the replace rate of recycled aggregate con- crete, the wrapping method on axial compression behavior of CFRP circular steel tubular confined recycled aggregate concrete columns were analyzed. Based on the results of the tests, with the replace rate of recycled aggregate concrete increasing, the specimens have an decreasing trend in the load bearing capacity. The whole CFRP wrapping circular steel tubular confined recycled aggregate concrete col- umns have higher load bearing capacity than the three stripe wrapping ones.