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Comparisons of Eurocodes design approaches for numerical analysis of shallow tunnels

机译：浅埋隧道数值分析的欧洲规范设计方法比较

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摘要

Although Eurocode 7 is not meant to be applied to the design of tunnels, the lack of standard codes explicitly focusing on tunneling leads to the situation that it is increasingly used in practice, at least for shallow tunnels in soil. However, there is no general agreement on which of the approaches defined in EC7 is the most suitable for the design of shallow tunnels, in particular when it comes to applying them in combination with numerical analyses. In this paper, the results of numerical calculations aimed at assessing ultimate limit state conditions of a shallow tunnel in soil are presented. The focus of the present work is firstly on the verification of the applicability of the Eurocodes in combination with numerical analyses and the comparison of different design approaches. Secondly, the consequences of the choice of a nonlinear material model for the shotcrete primary lining are discussed. (C) 2016 Elsevier Ltd. All rights reserved.
机译：尽管Eurocode 7并不是要应用于隧道的设计，但是缺乏明确关注隧道的标准代码导致了这样一种情况，即至少在土壤中的浅层隧道中越来越多地使用它。但是，关于EC7中定义的哪种方法最适合浅隧道的设计，尚未达成普遍共识，尤其是在将其与数值分析相结合时。本文提出了旨在评估土壤中浅埋隧道极限极限状态条件的数值计算结果。当前工作的重点首先是结合数值分析和不同设计方法的比较来验证欧洲规范的适用性。其次，讨论了为喷射混凝土主衬砌选择非线性材料模型的后果。 （C）2016 Elsevier Ltd.保留所有权利。

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