| 地铁区间隧道内爆炸效应研究 |
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| 引用本文： | 葛 涛,耿 民. 地铁区间隧道内爆炸效应研究[J]. 岩土力学, 2006, 27(Z2): 759-762 |
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| 作者姓名： | 葛 涛 耿 民 |
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| 作者单位： | 1.解放军理工大学工程兵工程学院，南京 210007; 2. 北京参保建筑设计研究院，北京 100850 |
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| 摘 要： | 为了评估南京地铁区间隧道内爆炸破坏效应，利用有限元分析软件LS-DYNA3D软件，计算了10kgTNT距隧道底部距离为1.1m的内爆炸工况。该软件中的化学爆炸空气冲击波模拟关键字避开了复杂烦琐的欧拉计算和ALE耦合分析过程，使得模型构建大大简化。计算得到了结构中不同关键节点的位移与速度时程曲线与不同单元的加速度时程曲线和最大主应变。结果表明地铁区间隧道在10kgTNT内爆作用下是安全的。
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| 关 键 词： | 地铁 区间隧道 内爆炸 数值模拟 |
| 收稿时间： | 2006-07-10 |
Study on inner explosion of sectional tunnel in subway |
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| GE Tao,GENG Min. Study on inner explosion of sectional tunnel in subway[J]. Rock and Soil Mechanics, 2006, 27(Z2): 759-762 |
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| Authors: | GE Tao GENG Min |
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| Affiliation: | 1. Engineering Institute of Engineering Corps, PLA University of Science and Technology, Nanjing 210007, China;2. Beijing Canbao Institute of architectural design, Beijing 100850, China |
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| Abstract: | In order to evaluate the inner explosion effect of sectional tunnel in subway in Nanjing, the engineering situation of inner explosion of 10 kg TNT with 1.1 m distance from tunnel bottom is numerically simulated with LS-DYNA3D.The keyword of simulation of air blast due to conventional weapon avoids complex and trivial Euler calculation and ALE coupling analysis, so as to simplify model construction. The history of displacements and velocities of different nodes were obtained, the history of acceleration of elements and their maximum principal strain were obtained as well. The result that the sectional tunnel in subway is safe with inner explosion of 10 kg TNT. |
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| Keywords: | subway sectional tunnel inner explosion numerical simulation |
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