螺旋箍筋混凝土短柱低速冲击作用实验研究  

Experimental study on low velocity impact of concrete short columns with spiral stirrups

作　　者：闫艳 周锡武 王波 郭沫锋 YAN Yan;ZHOU Xi-wu;WANG Bo;GUO Mo-feng(School of Transportation and Civil Architecture,Foshan University,Foshan 528225,China)

机构地区：[1]佛山科学技术学院交通与土木建筑学院,广东佛山528225

出　　处：《佛山科学技术学院学报（自然科学版）》2021年第4期5-8,54,共5页Journal of Foshan University(Natural Science Edition)

基　　金：广东省普通高校省级重大科研资助项目(KZDXM064);广东省教育厅学科专项资金资助项目(KJCX0188)。

摘　　要：为了探究螺旋箍筋对约束混凝土短柱轴向冲击作用的影响,采用超高落锤试验机对不同配箍间距和直径的混凝土短柱进行轴向冲击试验。研究发现:螺旋箍筋的直径大于其间距对轴向冲击承载力的影响,且当螺旋箍筋的直径越大时,箍筋间距对冲击承载力的影响越小。冲击力峰值随着配箍率增大呈一次线性增大,在配箍率较大(1.94%~2.91%)时,配箍率增大对冲击力峰值影响较小;在配箍率较小(0.68%~1.83%)时,配箍率增大对冲击力峰值影响较大。In order to explore the influence of spiral stirrups on the axial impact of confined concrete short columns,the axial impact tests of concrete short columns with different stirrup spacing and diameter were carried out by using ultra-high drop weight testing machine.It is found that the diameter of spiral stirrups is larger than the influence of their spacing on the axial impact bearing capacity,and when the diameter of spiral stirrups is larger,the influence of stirrup spacing on the impact bearing capacity is smaller.The peak impact force increases linearly with the increase of stirrup ratio.When the stirrup ratio is large(1.94%~2.91%),the increase of stirrup ratio has little effect on the peak impact force.When the stirrup ratio is small(0.68%~1.83%),the increase of stirrup ratio has a great influence on the peak impact force.

关 键 词：螺旋箍筋短柱 体积配箍率 轴向冲击 落锤试验 

分 类 号：TU375.3[建筑科学—结构工程]