| 并排式双隧道土壤挖掘应变位移有限元仿真 |
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| 引用本文： | 徐伟,董霖,田春兴,文桥,陶景青.并排式双隧道土壤挖掘应变位移有限元仿真[J].农业装备与车辆工程,2014(9):12-15. |
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| 作者姓名： | 徐伟 董霖 田春兴 文桥 陶景青 |
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| 作者单位： | 西华大学机械工程与自动化学院,四川省成都市610039 |
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| 基金项目： | 四川省杰出青年学术技术带头人培育计划项目（2011JQ0039）;四川省教育厅重点科研项目（13ZA0021）;2013年国家人社部留学回国人员科技活动择优资助项目,西华大学人才培养与引进项目（R0920203）;西华大学制造与自动化省高校重点实验室开放研究基金项目（SZJJ2011-014） |
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| 摘 要： | 利用COMSOL有限元软件对双隧道同向挖掘过程进行了二维数值模拟,研究了两隧道在不同中心距的条件下土层的应变范围、纵向位移以及垂直位移变化特性。结果表明:双隧道挖掘过程中,随着两隧道中心距的不断增大,应变范围逐渐减小;两隧道中心线附近地表有来自不同方向上的纵向位移,导致地层会出现明显的剪切层;此外土层的垂直位移最大值也逐渐减小。通过分析我们可以计算出两隧道的最佳中心距,这在实际工况中具有指导意义。
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| 关 键 词： | 应变 纵向位移 垂直位移 有限元 COMSOL |
Parallel Two Tunnels Soil Excavation Strain Displacement Finite Element Simulation |
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| Xu Wei,Dong Lin,Tian Chunxing,Wen Qiao,Tao Jingqing.Parallel Two Tunnels Soil Excavation Strain Displacement Finite Element Simulation[J].Agricultural Equipment & Vehicle Engineering,2014(9):12-15. |
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| Authors: | Xu Wei Dong Lin Tian Chunxing Wen Qiao Tao Jingqing |
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| Institution: | (School of Mechanical Engineering and Automation,Xihua University, Chengdu City, Sichuan Province 610039,China) |
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| Abstract: | By the finite element software COMSOL, the construction process of double tunnel synthetic is simulated with two- dimensional numerical simulation. The range of strain, longitudinal displacement and vertical displacement variation characteristics are researched under different center distance of two tunnels. The results show that strain range decreases with the increase of center distance of two tunnels in excavation process of double tunnel. There are longitudinal displacements of different directions in the surface near center line of two tunnels, which cause obvious shear layer in stratum. Moreover the maximum vertical displacement also gradually reduces. The best of center distance of two tunnels can be calculated by analysis, which has guiding significance in actual working condition. |
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| Keywords: | strain longitudinal displacement vertical displacement finite element COMSOL |
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