圆形截面钢筋混凝土悬臂柱抗冲击性能试验研究  

Impact Behaviour of Circular Section RC Cantilever Columns

作　　者：吴吉光 肖岩[2] Cristoforo Demartino WU Jiguang;XIAO Yan(College of Civil Engineering Hunan University,Changsha 410012,China;College of Civil Engineering Nanjing University of Technology,Nanjing 211800,China)

机构地区：[1]湖南大学土木工程学院,长沙410012 [2]南京工业大学土木工程学院,南京211800

出　　处：《结构工程师》2018年第6期95-103,共9页Structural Engineers

基　　金：国家自然科学基金重点项目(51438010)

摘　　要：为了研究冲击作用下的钢筋混凝土悬臂柱的抗冲击性能,采用大型水平撞击试验设备对4根圆形截面钢筋混凝土圆柱进行了试验研究,分析了不同冲击速度和柱配箍率对混凝土柱抗冲击性能的影响。采用高速摄像机记录了各个试件在冲击作用下的裂缝及变形的发展过程,得到了相关的冲击力时程曲线、柱变形分布图、试件裂缝及变形的发展过程和试件最终的破坏形态等试验结果。通过对以上试验结果的分析,发现增加混凝土柱的配箍率可以明显减少在高速冲击作用下的变形和减轻冲击后的损伤状态。In order to investigate the impact resistance capacity of reinforced concrete cantilever columns,four circular section RC columns were tested by using the horizontal collision facility.The effects of impact velocity and column transverse reinforcement ratio on the impact behavior were analyzed.A high speed camera was employed to record the development of the crack and deformation of the specimens.The corresponding impact force history,deformed shape,crack development and the final damage patterns of specimens were obtained.By analyzing the test results,it was found that increase of the transverse reinforcement ratio could obviously reduce the deformation and mitigate the final damage state under high speed impact.

关 键 词：钢筋混凝土柱 抗冲击性能 柱配箍率 裂缝发展 冲击试验 

分 类 号：TU375.3[建筑科学—结构工程]