钢管混凝土结构构件耐撞性能的试验研究  

Experimental Study on the Impact Resistance Property of Concrete Filled Steel Tubes

作　　者：李立军[1] 王蕊[1] 

机构地区：[1]太原理工大学建筑与土木工程学院,山西太原030024

出　　处：《北京理工大学学报》2012年第10期1018-1021,共4页Transactions of Beijing Institute of Technology

基　　金：国家青年科学基金资助项目(51108296)

摘　　要：为研究钢管混凝土结构构件的耐撞性能,采用落锤式冲击试验方法对其抗侧向冲击性能及破坏特征进行研究.获得钢管混凝土试件在不同冲击能量下冲击力时程曲线和试件的最大侧向位移,并分析了试件破坏形态及特征.实验结果表明:管壁厚度一定时,冲击力时程曲线经历3个阶段:迅速加载、平台值和卸载;随着冲击能量的增加,试件的侧向挠度增大;当钢管混凝土受到侧向冲力时,构件有明显的屈服现象;冲击能量越大构件的动力响应越明显.表明钢管混凝土构件具有良好的抗冲击性能.To study the crashworthiness of concrete filled steel tubes （CFST） under lateral impact, the impact experiments were carried out on the drop hammer test machine. The travel time curve and lateral displacement of CFST were obtained and the damage patterns were analyzed. The results show that, when the thickness is constant, the history curve of impact takes on three phases： rapid loading, platform and unloading. With the increase of impact energy, the lateral displacement of the component is increased. When the CFST is subjected to lateral impact, the components present obviously yield state showing its good properties of impact resistance and ductility. This research has laid the foundation for further study.

关 键 词：钢管混凝土(CFST) 落锤 时程曲线 冲击 侧向位移 

分 类 号：TU375.1[建筑科学—结构工程]