内爆炸条件下钢筋混凝土表面鼓包的试验观测和数值分析

兵工学报 ›› 2010, Vol. 31 ›› Issue (4): 510-515.

内爆炸条件下钢筋混凝土表面鼓包的试验观测和数值分析

时党勇^1，2，张庆明₁，付跃升₃，夏长富₂

（1.北京理工大学爆炸科学与技术国家重点实验室，北京 100081；2.工程兵指挥学院，江苏徐州 221004；3.福州大学，福建福州 350108）

收稿日期:2010-01-06 修回日期:2010-01-06 上线日期:2014-05-04
通讯作者: 时党勇 E-mail:sdyhf@bit.edu.cn
作者简介:时党勇（1978—），男，讲师，博士研究生
基金资助:
国家“973”计划项目（2000973）

Experimental Observation and Numerical Simulation on the Bulging Process of Reinforced Concrete Surface UnderInternal Blast Loading

SHI Dang-yong^{1, 2}， ZHANG Qing-ming₁， FU Yue-sheng₃， XIA

(1.State Key Laboratory of Explosion Science and Technology, Beijing Instituteof Technology, Beijing 100081, China;2. Command Institute of Engineer Corps, Xuzhou 221004, Jiangsu, China;3. Fuzhou University, Fuzhou 350108, Fujian, China)

Received:2010-01-06 Revised:2010-01-06 Online:2014-05-04
Contact: SHI Dang-yong E-mail:sdyhf@bit.edu.cn

摘要/Abstract

摘要： 对内爆炸条件下钢筋混凝土表面鼓包运动规律进行研究。采用高速运动分析系统记录试件的对内爆炸条件下钢筋混凝土表面鼓包运动规律进行研究。采用高速运动分析系统记录试件的表面鼓包运动，得到表面鼓包形状、中心位移和速度曲线。应用LS-DYNA程序，建立分离式钢筋混凝土模型，使用流体—固体耦合方法对表面鼓包运动进行数值计算。试验结果表明，表面鼓包速度主要受爆轰气体压力载荷控制，应力波使材料产生初期裂纹，同时试件漏斗坑形状呈阶梯型。数值模拟所得到的表面鼓包运动过程和破坏形貌与试验结果相比吻合较好。

关键词: 爆炸力学, 内爆炸, 钢筋混凝土, 试验研究, 分离式模

Abstract: The bulging process of reinforced concrete surface under internal blast loading was studied. A high-speed motion analysis system was used to record the dynamic bulging process of reinforced concrete surface to obtain its bulge contour, central displacement and bulging velocity curves. A separable reinforced concrete numerical model and fluid-solid interconnection method were used to predict the development of surface bulge in LS-DYNA. The experimental results show that the velocity of surface bulge is controlled mainly by the pressure of explosive gas, and the stress wave cracks the concrete initially. The blasting crater profile is similar to a ladder. Numerical simulation results show that the numerical model can be used to predict the bulging process of surface, and the numerical results coincide well with the experimental data.

Key words: explosion mechanics, internal blast, reinforced concrete, experimental research, separable model, numerical simulation

中图分类号:

时党勇，张庆明₁，付跃升₃，夏长富₂. 内爆炸条件下钢筋混凝土表面鼓包的试验观测和数值分析[J]. 兵工学报, 2010, 31(4): 510-515.

SHI Dang-yong， ZHANG Qing-ming₁， FU Yue-sheng₃， XIA. Experimental Observation and Numerical Simulation on the Bulging Process of Reinforced Concrete Surface UnderInternal Blast Loading[J]. Acta Armamentarii, 2010, 31(4): 510-515.

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