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首页> 外文期刊>Arabian Journal for Science and Engineering >Dynamic Characteristics of Adjacent Tunnel and Surroundings Under the Vibration of Trains in the First Tunnel with Different Buried Depths
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Dynamic Characteristics of Adjacent Tunnel and Surroundings Under the Vibration of Trains in the First Tunnel with Different Buried Depths

机译：不同埋藏深度的第一隧洞振动下邻近隧道及周边环境的动态特性

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摘要

This paper discussed the effect of different buried depth (B) of the twin-tunnels using scale experimental model and discreteelement method (DEM). The diameter (D) of the twin-tunnels is 6.2 m, and the spacing between the two tunnels is 0.25 D.Five cosine functions are used to simulate the vibration load of the train passing through the first tunnel, which is very convenientto simulate the longitudinal movement of the train in two-dimensional DEM. In the 1/20 scale experimental model,self-made gypsum rings were used to simulate the tunnel liner, and the vibrator applied the train load. Surface uplift, thedisplacement and deflection of sleepers, as well as the displacement, velocity, acceleration and strain of the tunnel’s linerand the surroundings are discussed with different buried depths twin-tunnels (0.5 D, 1.0 D, and 1.5 D). It is found that theburied depth of the tunnel will seriously affect the effect of train vibration on adjacent tunnels. The displacement, velocity,and acceleration in the vertical direction are much larger than the values in the horizontal direction. The deflection of sleepersduring vibration will cause an unsafe run of the train in adjacent tunnel and pose risks to liner. It is suggested to buildtwin-tunnels with larger buried depth if the economy and technology requirements are satisfied. The research is expected toprove a reference for similar projects.
机译：本文讨论了使用规模实验模型和离散的双隧道不同埋藏深度（b）的效果元素方法（DEM）。双隧道的直径（d）为6.2米，两个隧道之间的间距为0.25 d。五个余弦功能用于模拟火车穿过第一隧道的振动载荷，这非常方便模拟火车在二维DEM中的纵向运动。在1/20比例实验模型中，自制石膏环用于模拟隧道衬里，振动器施加了火车负荷。表面隆起，枕木的位移和偏转，以及隧道衬里的位移，速度，加速度和压力周围环境与不同的埋藏深度双隧道（0.5d，1.0d和1.5d）讨论。发现了埋设隧道的深度将严重影响火车振动在相邻隧道上的影响。位移，速度，垂直方向上的加速度远大于水平方向上的值。睡眠者的偏转在振动期间将导致火车在相邻隧道中的不安全运行，并对衬里构成风险。建议建立如果满足经济和技术要求，则埋藏深度的双隧道。这项研究有望证明了类似项目的参考。

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  • 来源
    《Arabian Journal for Science and Engineering》 |2021年第5期|5105-5119|共15页
  • 作者

    Lin Wu; Xiedong Zhang; Fuming Kuang; Jiale Sui; Zhou Xilong; Hong Guo;

  • 作者单位

    School of Transportation Wuhan University of Technology Wuhan 430063 People’s Republic of China;

    School of Advanced ManufacturingSchool of Transportation Wuhan University of Technology Wuhan 430063 People’s Republic of China;

    Engineering Hefei University Wuhan 230000 People’s Republic of China;

    School of Transportation Wuhan University of Technology Wuhan 430063 People’s Republic of China;

    Second Highway Consultant Co. Ltd. Wuhan 430063 People’s Republic of China;

    School of Civil Engineering and Architecture Shanxi University of Technology Hanzhong 723001 People’s Republic of China;

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

    Twin-tunnels; Train vibration load; Dynamic characteristics; Discrete element method; Scale experimental model;

    机译：双隧道;火车振动负荷;动态特征;离散元素法;规模实验模型;

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