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

王万月, 耿少波, 王华, 李文强, 刘亚玲. 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[J]. 高压物理学报, 2022, 36(3): 034104. doi: 10.11858/gywlxb.20210858
引用本文: 王万月, 耿少波, 王华, 李文强, 刘亚玲. 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[J]. 高压物理学报, 2022, 36(3): 034104. doi: 10.11858/gywlxb.20210858
WANG Wanyue, GENG Shaobo, WANG Hua, LI Wenqiang, LIU Yaling. Dynamic Response and Damage of Square Steel Tubular Structural Components by Near-Field Multiple Blast Loads[J]. Chinese Journal of High Pressure Physics, 2022, 36(3): 034104. doi: 10.11858/gywlxb.20210858
Citation: WANG Wanyue, GENG Shaobo, WANG Hua, LI Wenqiang, LIU Yaling. Dynamic Response and Damage of Square Steel Tubular Structural Components by Near-Field Multiple Blast Loads[J]. Chinese Journal of High Pressure Physics, 2022, 36(3): 034104. 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
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

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

  • 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%。

     

  • 图  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)

    图  方钢管变形

    Figure  2.  Deformation of steel tube

    图  超压时程曲线

    Figure  3.  Overpressure-time history curve

    图  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

    图  单发及多发爆炸示意图(单位:mm)

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

    图  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)

    图  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)

    图  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

    图  方钢管挠度时程曲线

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

    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)

    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)

    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)

    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

    图  14  方钢管挠度时程曲线

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

    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

    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

    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)

    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

    图  19  方钢管挠度时程曲线

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

    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)

    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)

    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

    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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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

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