论文部分内容阅读
钢筋混凝土构件存在尺寸效应现象,为了解大尺寸钢筋高强混凝土柱的轴心受压性能及其尺寸效应规律,使用40 000kN多功能压力机进行不同几何尺寸和不同配箍率的钢筋高强混凝土柱轴心受压性能试验。在试验基础上,对比分析了不同几何尺寸、不同配箍率的各试件破坏特征、极限承载力和变形。结果表明,大尺寸钢筋高强混凝土柱轴心受压承载力具有一定的尺寸效应,变形能力尺寸效应明显,配箍率对其承载力及变形能力存在不同程度的影响。
In order to understand the axial compressive properties of large-size steel-reinforced concrete high-strength concrete columns and their dimensional effect, 40,000kN multi-purpose press was used to carry out the reinforcement of high-strength concrete columns with different geometries and different stirrup ratios Heart compression performance test. Based on the experiment, the failure characteristics, ultimate bearing capacity and deformation of each specimen with different geometrical dimensions and different stirrup ratios were analyzed. The results show that the axial compression bearing capacity of the large-size steel-reinforced concrete high-strength concrete columns has certain size effect, and the dimensional effect of the deformation capacity is obvious. The stirrup ratio has different effects on the bearing capacity and deformation capacity.