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通过钢骨高强混凝土柱的承载力试验和在低周反复水平荷载作用下的试验研究,分析了长细比对柱受力性能的影响以及轴压比、配箍率及钢骨形式对柱抗震性能的影响。由试验得出钢骨高强混凝土长柱的承载能力随试件长细比的增大而降低,随混凝土强度等级的提高而提高,破坏的突然性随长细比的增大而俞益明显;另外,研究发现钢骨高强混凝土柱的抗震性能除对轴压力系数敏感外,钢骨形式也是一个重要的影响因素,对于钢骨形式不同的钢骨高强混凝土柱,可适当调整其轴压力系数限值,而配箍率的影响则并不显著。
Through the bearing capacity test of high-strength concrete columns with steel and the experimental research under repeated low-cycle horizontal loads, the influence of slenderness ratio on the mechanical performance of column and the influence of axial compression ratio, The impact of performance. The test results show that the bearing capacity of SRSC long columns decreases with the increase of slenderness ratio of specimens and increases with the increase of concrete strength grade. The sudden damage of failure increases with slenderness ratio, In addition, it is found that the seismic behavior of SRC columns is also an important factor in addition to the sensitivity to axial pressure coefficient. For steel-reinforced concrete columns with different forms of steel skeleton, the axial pressure coefficient limits Value, while the effect of the stirrup rate is not significant.