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钢管高强混凝土可以有效地克服高强混凝土本身的脆性,它除了具有普通钢管混凝土的优点外,强度还得到大幅度提高。本文介绍了10个不同长细比的钢管高强混凝土轴压长柱的试验研究工作。研究表明,套箍指标较高的钢管高强混凝土长柱的性能与普通钢管混凝土相似。普通钢管混凝土长柱的承载能力考虑长细比影响的折减系数计算公式也适用于钢管高强混凝土长柱。
Steel-tube high-strength concrete can effectively overcome the brittleness of high-strength concrete itself. In addition to the advantages of ordinary steel-concrete concrete, the strength is greatly improved. This paper introduces the experimental research work on 10 axially long columns of high-strength concrete filled steel tubes with different slenderness ratios. Studies have shown that the performance of high-strength concrete-filled steel long columns with high hoop indices is similar to that of ordinary concrete-filled steel tubes. The formula for calculating the reduction factor of the bearing capacity of the long columns of concrete-filled steel tubular columns is also applicable to the long columns of high-strength concrete-filled steel tubes.