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Subsurface ground movements due to circular shaft construction

机译：圆轴构造导致地下地下运动

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摘要

The rapid development of modern metropolises has led to a shortage of surface space and, in response, engineers have pursued alternatives below ground level. Shafts are commonly used to provide temporary access to the subsurface for tunnelling and, as permanent works, are utilised for lifts or ventilation purposes. The construction sequence of axisymmetric shafts makes them a dramatically simple solution. In addition, circular shafts are inherently stiffer than other plan geometries. Those are perhaps the reasons why circular shafts are preferred in situations of restricted space or unfavourable ground conditions. However, due to the lack of case histories reporting ground movements induced by shaft construction, no empirical prediction method for subsurface soil displacements exists. The work presented here seeks to provide clearer insights into surface and subsurface soil displacements induced by circular shaft construction by means of an analysis of measurements obtained from centrifuge tests and available field data. Novel empirical equations and procedures are then suggested for practical use. (C) 2019 Production and hosting by Elsevier B.V. on behalf of The Japanese Geotechnical Society.
机译：现代大都市的迅速发展导致地面空间的短缺，因此，工程师们在地面以下寻求替代方案。竖井通常用于为通向地下的隧道提供临时通道，并且作为永久性工程，通常用于举升或通风。轴对称轴的制造顺序使其成为一种非常简单的解决方案。另外，圆形轴固有地比其他平面几何形状更硬。这些也许就是为什么在空间有限或不利的地面条件下首选圆形轴的原因。但是，由于缺乏记录竖井施工引起的地面运动的案例历史记录，因此不存在用于地下土壤位移的经验预测方法。本文介绍的工作旨在通过对离心机测试获得的测量结果进行分析，并利用可获得的现场数据，对由圆形竖井施工引起的表层和地下土壤位移提供更清晰的见解。然后提出了新的经验公式和程序以供实际使用。 （C）2019年由Elsevier B.V.代表日本岩土工程学会制作和主持。

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  • 来源
    《Soils and foundations》 |2019年第5期|1160-1171|共12页
  • 作者

  • 作者单位

    Ho Chi Minh City Univ Transport Fac Transportat Engn Ho Chi Minh City Vietnam;

    Univ London Sch Math Comp Sci & Engn Civil Engn London England;

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

    Shaft construction; Ground movements; Centrifuge modelling;

    机译：轴结构;地面运动;离心机建模;

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