主管:中华人民共和国应急管理部
主办:应急管理部天津消防研究所
ISSN 1009-0029  CN 12-1311/TU

消防科学与技术 ›› 2022, Vol. 41 ›› Issue (9): 1213-1216.

• • 上一篇    下一篇

爆炸作用下钢柱动力响应快速评估方法

陈晔1,李毅1,崔健2   

  1. (1. 应急管理部天津消防研究所,天津300381;2. 天津大学建筑工程学院,天津300072)
  • 出版日期:2022-09-15 发布日期:2022-09-15
  • 作者简介:作者简介:陈晔(1988- ),男,浙江杭州人,应急管理部天津消防研究所博士,主要从事火灾、爆炸机理及结构抗爆耐火研究,天津市南开区卫津南路110号,300381。
  • 基金资助:
    国家自然科学基金项目(51708125);应急管理部天津消防研究所基科费项目(2020SJ10)

An efficient evaluation method for dynamic response of steel column under blast loadings

Chen Ye1, Li Yi1, Cui Jian2   

  1. (1. Tianjin Fire Science and Technology Research Institute of MEM, Tianjin 300381, China; 2. School of Civil Engineering, Tianjin University, Tianjin 300072, China)
  • Online:2022-09-15 Published:2022-09-15

摘要: 为了快速计算爆炸作用下钢柱的动力响应,针对不同爆炸荷载类型提出相应的计算方法:对于冲量爆炸荷载,将KARAGIOZOVA提出的上限法引入等效单自由度体系计算钢柱的局部和整体变形;对于准静态爆炸荷载,直接采用等效单自由度法计算钢柱的整体变形;对于动力爆炸荷载,采用建立的以局部和整体变形为评估指标的P-I曲线计算钢柱的变形响应。结果表明:提出的方法计算结果可靠,可应用于爆炸作用下钢柱动力响应的快速评估计算。

关键词: 爆炸, 钢柱, 动力响应, 快速评估

Abstract: In order to calculate the dynamic response of steel columns under blast loadings efficiently, methods are proposed for different blast loadings. For the impulsive blast loading, an upper bound approach is introduced into the equivalent single-degree-freedom system to calculate the local and global responses; for the quasi-static blast loading, the equivalent single-degree-freedom method can be directly used to determine the global response; for the dynamic blast loading, a pressure-impulse diagram is established by using indices of local and global deformations to determine the dynamic responses of steel columns. The results show that the proposed method gives reliable predictions, and can be applied to the efficient evaluation of dynamic responses of steel columns under blast loadings.

Key words: blast, steel column, dynamic response, efficient evaluation