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Seismic response of fluid-structure interaction of undersea tunnel during bidirectional earthquake

机译：双向地震海底隧道流固耦合的地震响应

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摘要

In this study, the seismic response of the fluid-structure interaction (FSI) of an undersea tunnel in a broken fault zone during a bidirectional earthquake is examined. An undersea tunnel FSI model that accounts for the effects of the viscoelastic artificial boundary, seepage, and dynamic liquid pressure, and considers the rock mass as a saturated porous medium, is created through finite element analysis software ADINA. The seismic response of the undersea tunnel is determined by considering both horizontal and vertical ground motion and analyzing the time history curve of the displacement, acceleration, and principal stress of the lining key point. Numerical results show that (1) the maximum displacement, acceleration, and tensile stress of the lining structure are all present in the vault area; (2) the time history curves of the displacement, acceleration, and principal stress of the key points follow a similar variation law; (3) the vertical displacement of the lining structure is greater than its horizontal displacement; and (4) tensile areas generally appear in the vault and inverted arch, but the hance is in the compression state.
机译：在这项研究中，研究了双向地震期间断层断裂带中海底隧道的流固耦合（FSI）的地震响应。通过有限元分析软件ADINA创建了海底隧道FSI模型，该模型考虑了粘弹性人工边界，渗流和动态液体压力的影响，并将岩体视为饱和的多孔介质。通过考虑水平和垂直地震动并分析衬砌关键点的位移，加速度和主应力的时程曲线来确定海底隧道的地震响应。数值结果表明：（1）拱顶区域均存在最大的衬砌结构位移，加速度和拉应力。 （2）关键点的位移，加速度和主应力的时程曲线遵循相似的变化规律； （3）衬砌结构的竖向位移大于其水平位移； （4）拱顶和倒拱处通常会出现拉力区，但长条处于压缩状态。

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  • 来源
    《Ocean Engineering》 |2014年第1期|64-70|共7页
  • 作者

    Xuansheng Cheng; Weiwei Xu; Caiquan Yue; Xiuli Du; Charles H. Dowding;

  • 作者单位

    School of Civil Engineering, Lanzhou University of Technology, Lanzhou 730050, PR China,Key Laboratory of Urban Security and Disaster Engineering of Education, Beijing University of Technology, Beijing 100124, PR China,Department of Civil and Environmental Engineering, Northwestern University, Evanston 60208, USA;

    School of Civil Engineering, Lanzhou University of Technology, Lanzhou 730050, PR China;

    School of Civil Engineering, Lanzhou University of Technology, Lanzhou 730050, PR China;

    Key Laboratory of Urban Security and Disaster Engineering of Education, Beijing University of Technology, Beijing 100124, PR China;

    Department of Civil and Environmental Engineering, Northwestern University, Evanston 60208, USA;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Undersea tunnel; Bidirectional earthquake; Seepage; Fluid-structure interaction; Seismic response;

    机译：海底隧道;双向地震;渗漏;流固耦合地震反应;

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