带圆钢管劲性高强混凝土轴压短柱试验研究

Experimental research on behavior of high strength concrete column reinforced with concrete-filled steel tube under axial compression

介绍了包括带圆钢管的劲性高强混凝土轴压短柱、钢管高强混凝土短柱以及普通高强混凝土短柱在内共13个试件的轴心受压试验,主要研究了带圆钢管的劲性高强混凝土轴压短柱的破坏特征、延性和极限承载力.研究结果表明,核心圆钢管的存在,改善了高强混凝土短柱的轴压性能;短柱中的混凝土与钢管能够共同工作直到破坏,其极限强度可以用叠加原理计算.

Experiments of 13 specimens including concrete-filled steel tube, high strength concrete-ill columns are presented. Based on the test results, th high strength concrete columns reinforced with ed columns steel tube and high strength concrete e failure feature, ductility and ultimate cap high strength concrete column reinforced with concrete-filled steel tube are investigated. R results show that the steel tube in the core improves the behavior of high strength concrete acity of esearch column under axial compression. In addition, the research results also show that the concrete can work in a good cooperation with the steel tube in the column under axial compression until the column is failure, so the ultimate capacity of high strength concrete column reinforced with concrete-filled steel tube can be calculated in the principle of superposition.