钢管混凝土在侧向冲击作用下的耐撞性研究  

Studies on CFST Under Lateral Impact

作　　者：郑红勇[1] 

机构地区：[1]太原大学建筑工程系,山西太原030009

出　　处：《太原大学学报》2009年第3期127-131,共5页Journal of Taiyuan University

基　　金：国家自然科学基金资助项目(50578103);山西省自然科学基金资助项目(20031054)

摘　　要：钢管混凝土结构构件充分发挥了钢管与混凝土两种材料的特性和潜力,近年来越来越广泛地被用于工业与民用建筑、大型桥梁及地下结构等重要工程领域。借助DHR9401型落锤式冲击实验机,完成了两端固定边界条件下,两种壁厚的钢管混凝土梁的侧向撞击试验,得出以下结论:钢管混凝土构件具有良好的抗冲击作用,在构件受到突加荷载作用时,表现出了很好的延性;钢管混凝土受到侧向冲击时,材料有明显的屈服阶段;落锤的速度越高和质量越大,构件的动力响应越明显。CFST are used widely in engineering and technology recently, which subject to accident impact load possibly in the process of usage. In this paper, The lateral impact experiments of CFST beams with different thickness of steel tube and fixed-fixed boundary conditions were accomplished on the DHR9401 drop hammer impact tester. The important results are summarized in the following several aspects： The CFST has good resistance to impact load, when the component is added the loads suddenly, the CFST demonstrates very good ductility. When the CFST is subjected to the lateral impact load, the materials have obvious yield stadge. The bigger the speed and quality of the drop hammer, the more fragile of CFST dynamic response.

关 键 词：钢管混凝土 侧向冲击 轴向力 临界冲击力 

分 类 号：TU501[建筑科学—建筑技术科学]