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首页> 外文期刊>Applied Mathematical Modelling >Scattering of a plane wave by shallow buried cylindrical lining in a poroelastic half-space
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Scattering of a plane wave by shallow buried cylindrical lining in a poroelastic half-space

机译：多孔弹性半空间中浅埋圆柱衬砌对平面波的散射

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摘要

The shallow buried tunnel is frequently encountered in underground engineering. The dynamic response of a tunnel under incident wave is of great importance for guiding the safety design in tunnel engineering. In this paper, a model for predicting the dynamic response of a shallow buried tunnel in saturated soil is proposed based on nonlocal Biot theory. The analytical solution is obtained using the wave function expansion method. To consider practical engineering problem, a set of material parameters for saturated soil and tunnel lining are selected for the numerical analysis. The influence of nonlocal parameter, which is introduced in nonlocal Biot theory to consider the pore size effect and pore dynamic effect, on dynamic stress concentrate factor in the lining is investigated in detail. The dynamic responses affected by the other factors, such as incident wave angle, frequency of incident wave and buried depth of the tunnel, have also been implemented. The dynamic stress concentrate factor distributed in the lining is also shown and the position and orientation appearing maximum concentrate factor can be easily determined from the contour plot, which can provide a visual guideline for safety design of a tunnel. (C) 2019 Elsevier Inc. All rights reserved.
机译：浅埋隧道在地下工程中经常遇到。隧道在入射波作用下的动态响应对于指导隧道工程安全设计具有重要意义。本文基于非局部比奥理论，提出了一种预测饱和土中浅埋隧道动力响应的模型。使用波动函数展开法获得解析解。为了考虑实际工程问题，为饱和土和隧道衬砌选择了一组材料参数进行数值分析。详细研究了非局部Biot理论中引入的非局部参数对孔隙尺寸效应和孔隙动力效应的影响，该参数对衬砌中的动态应力集中因子的影响。还实现了受入射波角度，入射波频率和隧道埋深等因素影响的动力响应。还显示了分布在衬砌中的动应力集中系数，并且可以从等高线图中轻松确定出现最大集中系数的位置和方向，这可以为隧道的安全设计提供视觉指导。 （C）2019 Elsevier Inc.保留所有权利。

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  • 来源
    《Applied Mathematical Modelling》 |2019年第6期|171-189|共19页
  • 作者

    Xua C. J.; Dinga H. B.; Tong L. H.; Luo W. J.; Wang N.;

  • 作者单位

    East China Jiaotong Univ, Jiangxi Key Lab Infrastruct Safety & Control Geot, Nanchang, Jiangxi, Peoples R China|Zhejiang Univ, Coll Civil Engn & Architecture, Res Ctr Coastal & Urban Geotech Engn, Hangzhou, Zhejiang, Peoples R China;

    East China Jiaotong Univ, Jiangxi Key Lab Infrastruct Safety & Control Geot, Nanchang, Jiangxi, Peoples R China;

    East China Jiaotong Univ, Jiangxi Key Lab Infrastruct Safety & Control Geot, Nanchang, Jiangxi, Peoples R China;

    East China Jiaotong Univ, Jiangxi Key Lab Infrastruct Safety & Control Geot, Nanchang, Jiangxi, Peoples R China;

    East China Jiaotong Univ, Jiangxi Key Lab Infrastruct Safety & Control Geot, Nanchang, Jiangxi, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Nonlocal elastic theory; Biot theory; Saturated soil; Dynamic response; Shallow buried cylindrical lining;

    机译：非局部弹性理论;毕奥理论;饱和土;动力响应;浅埋圆筒衬砌;

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