论文部分内容阅读
为研究钢-竹组合箱形短柱的力学性能,制作8组16个钢-竹组合柱试件,以截面尺寸、钢板厚度、有无螺钉以及螺钉间距为参数,进行轴心受压试验,观测不同参数下组合柱钢板和竹板的荷载-应变关系以及破坏特征,得到组合柱的延性系数、屈服承载力以及极限承载力,并根据组合柱钢材和竹材的荷载-应变关系,提出组合柱屈服承载力计算公式。研究结果表明:钢-竹组合箱形短柱具有良好的力学性能,截面尺寸和钢板厚度对组合柱的承载力和延性有明显的影响;是否打螺钉以及螺钉间距对组合柱承载力及延性的影响不明显,布置螺钉能够有效抑制组合柱受力过程中竹材的凸屈,提出的组合柱屈服承载力计算结果与试验值吻合良好。
In order to study the mechanical properties of the steel-bamboo combined box-shaped short columns, 8 groups of 16 steel-bamboo composite column specimens were made. The axial compression tests were carried out with the cross-sectional dimensions, the thickness of the steel plate, the presence or absence of screws and the screw spacing as parameters. The load-strain relationship and failure characteristics of composite column steel and bamboo under different parameters were observed, and the ductility coefficient, yield capacity and ultimate bearing capacity of the composite column were obtained. Based on the load-strain relationship between composite column steel and bamboo, Yielding capacity calculation formula. The results show that: the steel-bamboo composite box-shaped short column has good mechanical properties, the section size and the thickness of the steel sheet have a significant impact on the bearing capacity and ductility of the composite column; whether the screw and screw spacing on the combined column bearing capacity and ductility The effect is not obvious. The arrangement of the screws can effectively restrain the buckling of the bamboo during the stress of the composite column. The calculated yield strength of the composite column is in good agreement with the experimental data.