Analytical solution of the evolution of railway subgrade settlement induced by shield tunnelling beneath considering soil stress release

IF 6.7 1区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY

Tunnelling and Underground Space Technology Pub Date : 2025-04-13 DOI:10.1016/j.tust.2025.106607

Yao Shan , Guankai Wang , Weifan Lin , Shunhua Zhou , Frank Rackwitz

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Abstract

With the increasing number of railway intersection projects, the ground movement induced by the construction of shield tunnels affects the safety of the existing railway subgrade. Consequently, the reliable prediction of settlement evolution in railway subgrades is important. Considering the influence of various construction parameters, this paper presents an analytical method for calculating the time-dependent evolution of railway subgrade settlement induced by shield tunneling beneath based on the Mindlin solution. In this method, the time parameters are introduced through coordinate transformation. It models soil loss due to shield tunneling as the gradual release of stress in the surrounding soil, treating the released stress as an equivalent additional load on the tunnel’s surrounding soil. Finally, the proposed method is validated by comparing it with existing literature and applied in a case study of a shield tunnel crossing a railway subgrade on the southeast coast. The results demonstrate that this method effectively predicts subgrade settlement induced by shield tunneling beneath, offering valuable guidance for engineering practice.

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考虑土体应力释放的盾构隧道下铁路路基沉降演化解析解

随着铁路交叉口工程的增多，盾构隧道施工引起的地面移动影响着既有铁路路基的安全。因此，铁路路基沉降演化的可靠预测具有重要意义。考虑到各种施工参数的影响，本文提出了一种基于Mindlin解的铁路路基下盾构开挖沉降随时间演变的解析计算方法。该方法通过坐标变换引入时间参数。该模型将盾构隧道开挖引起的土壤流失模拟为周围土体应力的逐渐释放，将释放的应力视为隧道周围土体的等效附加荷载。最后，将所提方法与已有文献进行对比，并以东南沿海某铁路路基盾构隧道为例进行验证。结果表明，该方法能有效地预测盾构隧道开挖引起的路基沉降，对工程实践具有指导意义。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Tunnelling and Underground Space Technology 工程技术-工程：土木

CiteScore

11.90

自引率

18.80%

发文量

454

审稿时长

10.8 months

期刊介绍： Tunnelling and Underground Space Technology is an international journal which publishes authoritative articles encompassing the development of innovative uses of underground space and the results of high quality research into improved, more cost-effective techniques for the planning, geo-investigation, design, construction, operation and maintenance of underground and earth-sheltered structures. The journal provides an effective vehicle for the improved worldwide exchange of information on developments in underground technology - and the experience gained from its use - and is strongly committed to publishing papers on the interdisciplinary aspects of creating, planning, and regulating underground space.