爆炸冲击下钢制浮顶储罐破坏的数值模拟

doi:10.16265/j.cnki.issn1003-3033.2017.05.012

中国安全科学学报 ›› 2017, Vol. 27 ›› Issue (5): 64-69.doi: 10.16265/j.cnki.issn1003-3033.2017.05.012

爆炸冲击下钢制浮顶储罐破坏的数值模拟

路胜卓¹ 讲师, 陈卫东¹ 教授, 王伟², 张丰超¹, 马敬鑫¹, 师亚琴¹

1 哈尔滨工程大学航天与建筑工程学院,黑龙江哈尔滨 150001;
2 哈尔滨工业大学土木工程学院,黑龙江哈尔滨 150090

收稿日期:2017-02-21 修回日期:2017-04-12 出版日期:2017-05-20
作者简介:路胜卓 (1982—),男,黑龙江哈尔滨人,博士,讲师,主要从事爆炸力学、结构抗爆机制结构安全防护等方面的研究。E-mail:luszhrbeu2013@sina.com。
基金资助:
黑龙江省自然科学基金资助 (E2015046)。

Numerical simulation of steel floating-roof storage tank destruction under blast impact

LU Shengzhuo¹, CHEN Weidong¹, WANG Wei², ZHANG Fengchao¹MA Jingxin¹, SHI Yaqin¹

1 College of Astronautics and Civil Engineering, Harbin Engineering University, Harbin Heilongjiang 150001,China;
2 College of Civil Engineering, Harbin Institute of Technology, Harbin Heilongjiang 150090,China

Received:2017-02-21 Revised:2017-04-12 Published:2017-05-20

摘要/Abstract

摘要： 为获得大型钢制浮顶式储罐结构在爆炸冲击作用下的破坏机制,采用理论分析、缩比模型爆炸模拟试验与数值模拟结合的方法,研究浮顶储罐结构的破坏特征和内力变化过程。结果表明:由于爆炸冲击波的瞬间冲击作用,罐壁沿环向形成巨大的压缩内力,迎爆面罐壁顶部屈服导致罐体失稳破坏;浮顶罐的结构破坏经历了弹塑性动力响应过程,最终形成迎爆面罐壁的内凹塌陷和屈曲变形;并且,罐壁的内力以拉压力和产生弯矩的内力为主,但拉压作用更为明显,罐壁沿其环向处于受压状态,沿轴向处于受拉状态。

关键词: 浮顶式储罐, 爆炸冲击, 缩比模型爆炸试验, 破坏特征, 数值模拟

Abstract: For the sake of exploring the damage mechanism of steel storage tank with a floating roof under the blast impact, the process of structural failure and changes in interal forces were researched through theoretical analysis, scaled model test and numeical simulations. It is found that the tank walls produce a great compressive internal force in the circumferential direction, because of the instantaneous impact. Besides, the upper area yields and the tank body loses its stability, as well as a concave and buckling region appears in the structure in the process of approaching elastic-plastic response. Moreover, the tensile (or compressive) stress and stress giving birth to bending moment are main internal forces, but the effect of tensile (or compressive) stress is much obvious. The walls form a compressive state and a tensile state in their circumferential and axial directions respectively.

Key words: floating roof storage tank, blast impact, scaled model explosion experiment, failure state numerical simulation

中图分类号:

X932

路胜卓, 陈卫东, 王伟, 张丰超, 马敬鑫, 师亚琴. 爆炸冲击下钢制浮顶储罐破坏的数值模拟[J]. 中国安全科学学报, 2017, 27(5): 64-69.

LU Shengzhuo, CHEN Weidong, WANG Wei, ZHANG FengchaoMA Jingxin, SHI Yaqin. Numerical simulation of steel floating-roof storage tank destruction under blast impact[J]. China Safety Science Journal, 2017, 27(5): 64-69.

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爆炸冲击下钢制浮顶储罐破坏的数值模拟

Numerical simulation of steel floating-roof storage tank destruction under blast impact

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