摘要
利用落锤试验装置对简支、悬臂钢管混凝土试件进行大质量低速撞击试验,从变形、吸能能力和塑性铰等方面对试验资料进行分析与研究,结果表明:简支钢管混凝土试件的变形可超过其跨度的1/10,其最终位移与撞击能量基本为线性关系;撞击能量相同时,钢管混凝土试件的变形大约是空钢管的1/2,即吸能能力是空钢管的两倍;钢管混凝土试件形成的"塑性铰"可消耗80%以上的撞击能量。
An instrumented impact machine was used to carry out big mass and low velocity impact test on simply supported or projecting concrete filled steel tube beam. The experimental data is analyzed and investigated in some facets, such as deformation, endergonic capability and plastic hinge etc. It is found that the deformation value of simply supported concrete filled steel tube beam is bigger than one tens of its span, and the relation between the last displacement and impact energy is linear in general; when under the same impact load, the deformation of concrete filled steel tube beam is almost half of empty steel tube＇s. That is to say, the endergonic capability of the former is two times as big as the latter. The plastic hinge formed in concrete filled steel tube beam can consume over 80 percents of impact energy.
出处
《太原理工大学学报》
CAS
北大核心
2007年第5期394-397,共4页
Journal of Taiyuan University of Technology
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)
关键词
钢管混凝土
冲击荷载
耐撞性能
concrete filled steel tube
impact load
impact resisting capability
