摘要
通过6根钢骨-方钢管混凝土组合短柱的偏心受压试验,研究该组合柱的受力性能.试验结果表明:钢骨-方钢管混凝土偏心受压组合短柱试件的破坏是由于方钢管局部出现凸曲而导致承载力的下降而引起的;混凝土的强度、方钢管的宽厚比和钢骨的用量都对组合柱的受力性能有着显著影响;通过截面应变分析,可以近似地认为偏心受压组合柱符合平截面假定.
Six composite stub concrete columns with skeletal core and square steel tubular envelope were tested under eccentrically-loaded compression and their kinematic performance was investigated.Their experimental result showed that the reason of failure of these columns was that local buckling took place with the column specimen and its bearing capacity descended.The concrete strength,width-to-thickness ratio of square steel tube and the amount of steel skeletal core had significant effect on the bearing-capacity of the composite columns.It would be approximatively considered after strain analysis of column section that its deformation was consistent with the planar cross-section assumption.
出处
《兰州理工大学学报》
CAS
北大核心
2011年第4期139-144,共6页
Journal of Lanzhou University of Technology
关键词
组合柱
方钢管混凝土
承载力
偏心荷载
延性
composite columns
concrete-filled square steel tube
bearing-capacity
eccentrically-loaded
ductility