Research on minimum depth burial of shield tunnel machines crossing over ground base under rivers

DAI Xiao-ping; GUO Tao; QIN Jian-she

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Research on minimum depth burial of shield tunnel machines crossing over ground base under rivers

更新时间：2026-06-25

- Research on minimum depth burial of shield tunnel machines crossing over ground base under rivers
- Vol. 27, Issue 5, (2006)
- 作者机构：
  
  1. 解放军理工大学理学院,南京,210007
  2. 河海大学岩土工程研究所,南京,210098
- 作者简介：
- 基金信息：
- DOI：
  CLC： TV554
- Online First：05 November 2013，
  
  Published：2006
- 稿件说明：
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DAI Xiao-ping, GUO Tao, QIN Jian-she. Research on minimum depth burial of shield tunnel machines crossing over ground base under rivers[J]. 2006, 27(5).
DOI：

DAI Xiao-ping, GUO Tao, QIN Jian-she. Research on minimum depth burial of shield tunnel machines crossing over ground base under rivers[J]. 2006, 27(5). DOI：

摘要

盾构机穿越江、海、湖泊等浅覆土层时，由于隧道衬砌所受浮力作用，上部覆土厚度极为重要。针对传统上覆土层厚度计算方法中没有考虑土体自身剪切强度对抗浮作用发挥的问题，提出了一个新的覆土厚度计算方法，并通过算例对所提的计算方法与简化计算方法进行对比分析。说明了新的计算方法比传统计算方法更符合实际。最后，通过有限元数值计算浅覆土层的应力、应变情况，进一步验证了该计算方法的合理性。

Abstract

It is very important for the tunnel lining to determine the earth covering thickness as the rising force when the shield tunnel machine crosses over the ground base under rivers

lakes the sea

and so on. The authors bring forward a new method to calculate the earth covering thickness of the tunnel lining .The new method takes into account of the shearing strength of the soil that can resist the rising force

while the conventional method doesn’t consider that. The new method is more practical than the conventional method according to the computation in the case study. Finally

the authors analyze the stress and strain in the shallow earth covering by FEM; the result proves that the new method is more reasonable.

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