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Tests of eccentrically loaded L-shaped section steel fibre high strength reinforced concrete and composite columns

机译：偏心加载的L型截面钢纤维高强度钢筋混凝土和复合柱的测试

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摘要

Influence of steel fibres on the behaviour of L-shaped high strength reinforced concrete and concrete-encased composite columns is presented. A total of 16 L-shaped plain and steel fibre columns were constructed and tested in this study. The main parameters were the concrete compressive strength, load eccentricity, slenderness effect and steel fibre content. The experimental results of L-shaped reinforced concrete and composite column specimens were discussed in the paper. In addition, the column specimens were analysed based on a theoretical method considering the nonlinear behaviour of the materials. The slenderness effect of the columns has been taken into account by using The Moment Magnification Method suggested by ACI 318 specification. The results show that the inclusion of steel fibres into high strength concrete has considerable effect on structural behaviour of L-shaped both reinforced concrete and composite columns subjected to biaxial bending and axial load.
机译：提出了钢纤维对L形高强钢筋混凝土和混凝土包裹组合柱性能的影响。在此研究中，总共构造并测试了16个L形普通钢纤维柱。主要参数是混凝土的抗压强度，荷载偏心率，细长效应和钢纤维含量。讨论了L形钢筋混凝土和复合柱试样的试验结果。另外，考虑到材料的非线性行为，基于理论方法分析了圆柱试样。通过使用ACI 318规范建议的矩放大法，已考虑到了色谱柱的细长效应。结果表明，在高强度混凝土中掺入钢纤维对L型钢筋混凝土和复合柱在双轴弯曲和轴向荷载作用下的结构性能都有相当大的影响。

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