| 盾构法隧道施工的精细模拟 |
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| 引用本文： | 张海波,殷宗泽,朱俊高.盾构法隧道施工的精细模拟[J].岩土力学,2004,25(Z2):280-284. |
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| 作者姓名： | 张海波 殷宗泽 朱俊高 |
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| 作者单位： | 河海大学,岩土工程研究所,江苏,南京,210098 |
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| 摘 要： | 在分析了现有的部分细节仿真中存在问题基础上,提出在盾构开挖面前方设置开挖卸荷单元,来模拟开挖面土体的三维移动,改进了千斤顶推力的施加方法.通过施加已知结点位移模拟刀盘超挖和盾尾脱空引起的地层损失,并通过设置横向和纵向三维Goodman接触面来模拟盾构前行、盾尾脱空及注浆作用下土体与结构间的接触.利用推荐的方法对一算例进行分析.结果证明了模拟方法的合理性.
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| 关 键 词： | 盾构隧道 精细模拟 有限元法 |
| 文章编号： | 1000-7598-(2004)增-0280-05 |
| 修稿时间： | 2004年4月23日 |
Elaborate Simulation of shield tunneling |
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| ZHANG Hai-bo,YIN Zong-ze,ZHU Jun-gao.Elaborate Simulation of shield tunneling[J].Rock and Soil Mechanics,2004,25(Z2):280-284. |
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| Authors: | ZHANG Hai-bo YIN Zong-ze ZHU Jun-gao |
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| Abstract: | An unloading element is introduced to model the three-dimensional displacement of soil at tunnel face; the applying method of jack force behind the machine is modified, the ground loss caused by over excavation and tail void was simulated by adding known node displacements;transverse and longitudinal interface element was placed to simulate the soil-structure contact during the machine driven forward, filling of tail void and grouting. The proposed modeling techniques of shield tunneling construction are applied to simulate a tunneling project; the displacement of soil caused by shield tunneling are investigated; and the results prove the rationality of the proposed simulation method. |
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| Keywords: | shield-driven tunnel elaborate simulations finite element method |
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