| 隧道内爆炸冲击波传播特性及爆炸荷载分布规律研究 |
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| 引用本文： | 田志敏,邬玉斌,罗奇峰. 隧道内爆炸冲击波传播特性及爆炸荷载分布规律研究[J]. 振动与冲击, 2011, 30(1): 21-26. DOI: |
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| 作者姓名： | 田志敏 邬玉斌 罗奇峰 |
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| 作者单位： | 1. 总参工程兵科研四所, 北京100850; 2. 中国地震局工程力学研究所, 哈尔滨 150080; 3. 同济大学 上海防灾救灾研究所, 上海 200092 |
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| 基金项目： | 国家自然科学基金，国家科技支撑计划，上海市建设交通重大科研项目 |
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| 摘 要： | 隧道内爆炸产生复杂的爆炸冲击波流场,作用于隧道衬砌上的冲击波荷载分析十分困难.采用三维有限元计算方法,对带端墙隧道内爆炸空气冲击波的传播过程进行了数值模拟,给出了内爆炸产生的隧道内冲击波流场,并与双向开口隧道内爆炸流场进行了对比,分析了炸药装药形状、炸药引爆位置对爆炸荷载分布的影响,研究了作用于隧道衬砌上的反射冲击波荷载峰值分布规律,给出了估计衬砌上反射超压峰值的公式.
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| 关 键 词： | 隧道内爆炸 冲击波流场 反射冲击波荷载 衰减规律 |
| 收稿时间： | 2009-08-24 |
| 修稿时间： | 2009-11-04 |
Characteristics of in-tunnel explosion-induced air shock wave and distribution law of reflected shock wave load |
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| TIAN Zhi-min,WU Yu-bin,LUO Qi-feng. Characteristics of in-tunnel explosion-induced air shock wave and distribution law of reflected shock wave load[J]. Journal of Vibration and Shock, 2011, 30(1): 21-26. DOI: |
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| Authors: | TIAN Zhi-min WU Yu-bin LUO Qi-feng |
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| Affiliation: | 1. The Forth Engineer Scientific Research Institute of the Headquarters of the General Staff, Beijing 100850, China; 2. Institute of Engineering Mechanics of the China Earthquake Administration, Harbin 150080, China; 3. Shanghai Institute of Disaster Prevention and Rescue, Shanghai 200092, China |
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| Abstract: | Propagation of air shock wave induced by in-tunnel explosions and distribution law of shock wave load on inner surface of a tunnel were studied here.The flow fields of the shock wave in a tunnel with and without end walls were described on the basis of a three-dimensional finite element analysis.The distribution laws of the peak reflected overpressure(i.e.peak load) and the impulse on the inner surface of the tunnel were analyzed.The influences of shape and explosion location of TNT explosives on the propag... |
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| Keywords: | in-tunnel explosion flow field of shock wave reflected shock wave load distribution attenuation law |
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