近场多发爆炸荷载作用下方钢管构件的动态响应及其损伤

王万月; 耿少波; 王华; 李文强; 刘亚玲

doi:10.11858/gywlxb.20210858

近场多发爆炸荷载作用下方钢管构件的动态响应及其损伤

doi: 10.11858/gywlxb.20210858

王万月^{1, 2,},
耿少波^2,*, ,,
王华^{1, 3},
李文强⁴,
刘亚玲²

1.
中北大学机电工程学院，山西太原　030051
2.
中北大学土木工程学科部，山西太原　030051
3.
北京航空航天大学宇航学院，北京　100191
4.
中北大学信息与通信工程学院，山西太原　030051

基金项目: 国家自然科学基金（51408558）；山西省自然科学基金（201901D111161）

详细信息

作者简介:
王万月（1975－），女，博士研究生，主要从事建筑抗爆研究. E-mail：wanyue@nuc.edu.cn

通讯作者:
耿少波（1982－），男，博士，副教授，主要从事桥梁结构爆炸荷载和防护设计研究.E-mail： gengshaobo@nuc.edu.cn

中图分类号: O347; TU352.1
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出版历程
- 收稿日期: 2021-07-26
- 修回日期: 2021-09-06
- 刊出日期: 2022-05-30

Dynamic Response and Damage of Square Steel Tubular Structural Components by Near-Field Multiple Blast Loads

WANG Wanyue^{1, 2
,},
GENG Shaobo^{2,*
, ,},
WANG Hua^{1, 3},
LI Wenqiang⁴,
LIU Yaling²

1.
College of Mechatronics Engineering, North University of China, Taiyuan 030051, Shanxi, China
2.
Department of Civil Engineering, North University of China, Taiyuan 030051, Shanxi, China
3.
School of Astronautics, Beihang University, Beijing 100191, China
4.
School of Information and Communication Engineering, North University of China, Taiyuan 030051, Shanxi, China

摘要

摘要: 为研究多发爆炸荷载作用下方钢管构件的动态响应及损伤情况，依据方钢管单发爆炸试验确定合理的模型参数，分析了近场爆炸总药量相同的条件下药量等分份数、药量质量比以及起爆时间间隔3种因素对方钢管构件抗爆性能的影响。结果表明：多发等分药量同时起爆时，方钢管迎爆面变形和挠度分别比单发爆炸时大17.5%和32.1%；对于两发爆炸荷载，当两发炸药的质量接近时，方钢管迎爆面变形和挠度比质量差异较大时大18.3%和19.7%。对于多发等分药量爆炸荷载：当各炸药爆心到方钢管跨中的距离相同时，非同时起爆时方钢管迎爆面的变形比同时起爆时小4.3%，且起爆时间间隔越长，变形越小；当各炸药爆心到方钢管跨中距离不同时，调整各炸药起爆时间可使方钢管迎爆面跨中变形比同时起爆时大13.9%。
- 爆炸荷载 /
- 方钢管 /
- 药量份数 /
- 质量比 /
- 起爆时间
Abstract: In order to study the dynamic response and damage of square steel tubular structural components under near-field multiple blast loads, the explosion resistance performance of square steel tubes is obtained from the number of equal parts, the charge mass ratio and the initiation time interval at the same total explosive charge based on the explosion test. The results show that when the total explosive is equally divided with simultaneous detonation, the deformation on the front surface and the deflection of the tube under multiple blast loads are both larger than that of the tube under single blast load by 17.5% and 32.1%, respectively. For two explosive loads, when the mass of the two explosives is close, the deformations on the front surface and the deflection are greater than that the mass of the two explosives is quite different by 18.3% and 19.7%, respectively. For multiple blast loads, when the distance between the explosive center of each explosive and the mid-span of the tube is equal, the deformation on the front surface of the tube with non-simultaneous detonation is smaller than that of the tube with simultaneous detonation by 4.3%, and the longer the initiation time interval is, the smaller the deformation will be. When the distance between the explosive center of each explosive and the mid-span of the tube is not equal, if the initiation time of the explosives is appropriate, the deformation on the front surface of the tube with non-simultaneous detonation can be larger than that of the tube with simultaneous detonation by 13.9%.
- blast load /
- square steel tube /
- explosive equal part /
- mass ratio /
- initiation time

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图 1 方钢管爆炸试验装置及1/2有限元模型（单位：mm）

Figure 1. Blast test device of square steel tube and 1/2 finite element model (Unit: mm)

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图 2 方钢管变形

Figure 2. Deformation of steel tube

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图 3 超压时程曲线

Figure 3. Overpressure-time history curve

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图 4 方钢管迎爆面跨中z向位移和挠度时程曲线

Figure 4. Time histories of z displacement on the front surface at mid span and the deflection of steel tube

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图 5 单发及多发爆炸示意图（单位：mm）

Figure 5. Schematic diagram of single and multiple blast (Unit: mm)

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图 6 单发及多发爆炸超压云图（ $ t $ = 100 μs）

Figure 6. Overpressure contours of single and multiple blast ( $ t $ = 100 μs)

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图 7 单发及多发爆炸1/2方钢管变形云图（t= 10 ms）

Figure 7. Deformation contours of 1/2 steel tube of single and multiple blast (t= 10 ms)

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图 8 方钢管迎爆面变形最大处z向位移时程曲线

Figure 8. Time histories of z displacement at the maximum deformation on the front surface of square steel tube

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图 9 方钢管挠度时程曲线

Figure 9. Time histories of the deflection of the square steel tube

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图 10 具有不同质量比的两发爆炸示意图（单位：mm）

Figure 10. Schematic diagram of two charges with different mass ratios (Unit: mm)

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图 11 具有不同质量比的两发爆炸超压云图（ $ t $ = 100 μs）

Figure 11. Overpressure contours of two charges with different mass ratios ( $ t $ = 100 μs)

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图 12 不同质量比的两发爆炸荷载下1/2方钢管的变形云图（ $ t $ = 10 ms）

Figure 12. Deformations contours of 1/2 steel tube loaded by two charges with different mass ratios ( $ t $ = 10 ms)

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图 13 方钢管迎爆面变形最大处z向位移时程曲线

Figure 13. Time histories of z displacement at the maximum deformation on the front surface of square steel tube

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图 14 方钢管挠度时程曲线

Figure 14. Time histories of the deflection of the square steel tube

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图 15 起爆时间间隔不同和殉爆时炸药2开始起爆时超压云图

Figure 15. Overpressure contours when the explosive 2 starts to detonate with different detonation time interval and sympathetic detonation

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图 16 起爆时间间隔不同和殉爆时冲击波到达方钢管时的超压云图

Figure 16. Overpressure contours when the overpressure reaches to the square steel tube with different detonation time interval and sympathetic detonation

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图 17 不同起爆时间间隔和殉爆时1/2方钢管的变形云图（ $ t $ = 10 ms）

Figure 17. Deformations contours of 1/2 square steel tube with different detonation time intervals and sympathetic detonation ( $ t $ = 10 ms)

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图 18 方钢管迎爆面变形最大处z向位移时程曲线

Figure 18. Time histories of z displacement at maximum deformation on the front surface of square steel tube

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图 19 方钢管挠度时程曲线

Figure 19. Time histories of the deflection of the square steel tube

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图 20 3发和4发炸药非同时起爆时的超压云图（t = 100 μs）

Figure 20. Overpressure contour of three and four charges with non-simultaneous detonation (t= 100 μs)

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图 21 3发和4发爆炸非同时起爆时1/2方钢管的变形云图（t = 10 ms）

Figure 21. Deformation contours of 1/2 square steel tube under three and four charges with non-simultaneous detonation (t = 10 ms)

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图 22 3发和4发炸药爆炸荷载下方钢管迎爆面变形最大处z向位移时程曲线

Figure 22. Time histories of z displacement at the maximum deformation on the front surface of square steel tube under three and four charges

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图 23 3发和4发炸药爆炸荷载下方钢管挠度时程曲线

Figure 23. Time histories of the deflection of the square steel tube under three and four charges

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