摘要
纽约世贸中心大楼2001年9月11日遭受恐怖袭击而倒塌以后,爆炸荷载作用下钢结构的动力反应分析的研究引起了国内外学者和工程界的高度关注。阐述了室内爆炸波作用在结构构件上的超压模型以及钢材在爆炸荷载作用下的动力性能,分析了适应于爆炸荷载作用下钢材的热粘塑性Johnson-Cook本构模型,总结了爆炸荷载作用下钢构件及钢结构的动力反应与倒塌机制,最后提出了爆炸荷载作用下钢结构的动力反应分析研究中的存在问题与解决方法。
Since the twin towers of New York World Trade Center of USA subjected the terrorist attack collapsed on 11 September 2001,the research on dynamic response and collapse mechanism of steel structures subjected blast loads has been paid significant attention.The overpressure models of the interior blast wave acting on structural members and the dynamic properties of steel subjected to blast loads are described.The Johnson-Cook thermoviscoplasticity constitutive model suitable to the steel subjected to blast loads is investigated.The dynamic responses and collapse mechanism of steel member and structures subjected to blast loads are summarized.The open questions and solving methods on the dynamic responses and collapse mechanism of steel structures subjected to blast loads are proposed.
出处
《建筑结构》
CSCD
北大核心
2006年第S1期729-732,728,共5页
Building Structure
基金
国家杰出青年科学基金(50425824)
海外青年学者合作研究基金(50528808)资助项目
关键词
钢结构
爆炸荷载
动力反应
倒塌机制
本构模型
steel structure
blast load
dynamic response
collapse mechanism
constitutive model
