摘要
通过15根方形截面配筋钢管混凝土轴心受压短柱的试验研究,选择约束效应系数和钢筋的配筋率等为基本参数,探讨了配筋率对钢管混凝土轴心受压构件受力性能的影响。研究结果表明:1)在核心混凝土中加入钢筋对于提高短柱的承载力不是非常明显,但能提高短柱的延性,在一定程度上延缓或抑制混凝土中剪切斜裂缝的开展;2)当约束效应系数较小时,配筋靠近边缘对提高方钢管混凝土的承载力更有效;3)当约束效应系数较大时,配筋靠近中央对提高方钢管混凝土的承载力更有效。
Considering material parameter（constraining factor） and reinforcement ratio and so on as basic parameters, 15 Concrete-filled rectangular steel tubular stub columns with reinforcement （CFRT） are tested under axial compression. And the influence factors of the type structure are studied. The results show that adopting to steel bar in the core part of concrete-filled rectangular steel tubular play little role in enhancing the carrying capacity of short column, but could improve the ductility of the type structure, could delay or inhibit the shear diagonal cracking at the same time, reinforcement closing to the edge of CFRT would be benefit to improve the bearing capacity when the constraining factor was smaller; however, reinforcement closing to the centre of CFRT would improve the bearing capacity effectively while constraining factor is bigger.
出处
《石河子大学学报（自然科学版）》
CAS
2007年第4期500-503,共4页
Journal of Shihezi University(Natural Science)
关键词
钢管混凝土
轴心受压
承载力
试验
concrete-filled steel tubes
axial comprcssion
carrying capacity
