配置高强钢筋的高强混凝土轴压柱承载力计算分析

通过对12个配置不同箍筋间距、箍筋强度、纵筋强度以及混凝土强度的轴压短柱进行非线性有限元分析,对其承载力进行了研究,比较了箍筋的强度、间距、纵筋强度以及混凝土强度等因素对其承载力的影响,结果表明:采用密排高强箍筋约束混凝土是提高混凝土轴向承载力的有效措施,即箍筋间距较小、强度较高的约束混凝土构件具有较好的受力性能.

Mechanical Capacity Analysis of High-strength Concrete Columns Configuration of High-strength Steel under Axial Compress

The nonlinear finite element analysis of 12 axially compressed concrete short columns which was equipped with different stirrup span,diameter,and longitudinal bar strength has been done to study their bearing capacities,identifying and comparing the influence of its capacity of strength of stirrups,spacing,longitudinal reinforcement strength and concrete strength and other factors.The results showed that the measure of closely placing the high strength stirrups to constraint con-crete can effectively improve the axial bearing capacity of the components;the concrete columns with a smaller stirrup span,higher concrete strength have superior mechanical behavior of the constraint.