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为了研究高强箍筋约束高强混凝土柱的抗轴压性能,定量分析该类型柱的强度和变形提高程度,进行了31根高强箍筋约束高强混凝土方形截面柱的轴心受压试验。在试验的基础上,分析箍筋强度、箍筋间距和箍筋形式对其强度和变形性能的影响;结合国内外试验数据,通过回归分析提出高强箍筋约束高强混凝土峰值强度和极限应变的计算公式。
In order to study the anti-axial compressive property of high-strength concrete columns with high-strength stirrups and to quantitatively analyze the strength and the degree of deformation of this type of columns, 31 axial compression tests of square columns with high-strength stirrup-restrained high-strength concrete columns were carried out. On the basis of the experiment, the influence of stirrup strength, stirrup spacing and stirrup form on the strength and deformation properties was analyzed. Based on the experimental data at home and abroad, the calculation of peak strength and ultimate strain of high strength concrete confined by high strength stirrups was made by regression analysis formula.