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Conceptual Methods to Forecast Tunnel Distortion Resulting From the Overlying Foundation Pit Excavation and Dewatering.

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Title: Conceptual Methods to Forecast Tunnel Distortion Resulting From the Overlying Foundation Pit Excavation and Dewatering.
Authors: Liao, Chengbin1 (AUTHOR), Feng, Guohui2 (AUTHOR) ghfeng@hzcu.edu.cn, Li, Feng3 (AUTHOR), Yang, Kiafang4 (AUTHOR), Wei, Gang2 (AUTHOR), Hu, Min5 (AUTHOR), Song, Zhiyong6 (AUTHOR), Fan, Xiaozhen2 (AUTHOR), Lin, Zhaorui7 (AUTHOR), Han, Jianyong (AUTHOR) hanjianyong19@sdjzu.edu.cn
Source: Advances in Civil Engineering. 5/29/2026, Vol. 2026, p1-13. 13p.
Subjects: Timoshenko beam theory, Soil-structure interaction, Excavation (Civil engineering), Building foundations, Drainage, Soil mechanics, Elasticity
Abstract: The excavation process of deep and large foundation pits in cities will inevitably be treated with dewatering, and the excavation and dewatering of foundation pits will cause changes in the free displacement field of surrounding soil, which will further cause uneven deformation of existing tunnels. The majority of research studies are paying more attention to the excavation‐induced unloading stress on the underlying tunnel, ignoring the foundation pit dewatering for tunnel–soil interaction. Based on this condition, first, the Mindlin solution and the soil effective stress principle are used to obtain the additional stress at the axis of the tunnel under the action of foundation pit excavation and dewatering. Then, the existing tunnel is simplified as a Timoshenko beam lying on the three‐parameter Kerr foundation model. The theoretical solution of tunnel–soil interaction is obtained by Fourier cosine series. Compared with the actual engineering monitoring data, the rationality of the method is verified. Comparison with the results from the Pasternak model and without considering the influence of foundation pit dewatering, the outcomes from the suggested method play a closer resemblance to the measurements. The parametric study shows that increasing the permeability coefficient of soil and depth of dewatering cause the deformation and internal force of the tunnel to decrease slowly. Increasing the depth of the tunnel will cause the deformation and internal force of the tunnel to decrease. [ABSTRACT FROM AUTHOR]
Copyright of Advances in Civil Engineering is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Conceptual Methods to Forecast Tunnel Distortion Resulting From the Overlying Foundation Pit Excavation and Dewatering.
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  Data: <searchLink fieldCode="AR" term="%22Liao%2C+Chengbin%22">Liao, Chengbin</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Feng%2C+Guohui%22">Feng, Guohui</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> ghfeng@hzcu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Li%2C+Feng%22">Li, Feng</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yang%2C+Kiafang%22">Yang, Kiafang</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wei%2C+Gang%22">Wei, Gang</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Hu%2C+Min%22">Hu, Min</searchLink><relatesTo>5</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Song%2C+Zhiyong%22">Song, Zhiyong</searchLink><relatesTo>6</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Fan%2C+Xiaozhen%22">Fan, Xiaozhen</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Lin%2C+Zhaorui%22">Lin, Zhaorui</searchLink><relatesTo>7</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Han%2C+Jianyong%22">Han, Jianyong</searchLink> (AUTHOR)<i> hanjianyong19@sdjzu.edu.cn</i>
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  Data: <searchLink fieldCode="JN" term="%22Advances+in+Civil+Engineering%22">Advances in Civil Engineering</searchLink>. 5/29/2026, Vol. 2026, p1-13. 13p.
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  Data: <searchLink fieldCode="DE" term="%22Timoshenko+beam+theory%22">Timoshenko beam theory</searchLink><br /><searchLink fieldCode="DE" term="%22Soil-structure+interaction%22">Soil-structure interaction</searchLink><br /><searchLink fieldCode="DE" term="%22Excavation+%28Civil+engineering%29%22">Excavation (Civil engineering)</searchLink><br /><searchLink fieldCode="DE" term="%22Building+foundations%22">Building foundations</searchLink><br /><searchLink fieldCode="DE" term="%22Drainage%22">Drainage</searchLink><br /><searchLink fieldCode="DE" term="%22Soil+mechanics%22">Soil mechanics</searchLink><br /><searchLink fieldCode="DE" term="%22Elasticity%22">Elasticity</searchLink>
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  Label: Abstract
  Group: Ab
  Data: The excavation process of deep and large foundation pits in cities will inevitably be treated with dewatering, and the excavation and dewatering of foundation pits will cause changes in the free displacement field of surrounding soil, which will further cause uneven deformation of existing tunnels. The majority of research studies are paying more attention to the excavation‐induced unloading stress on the underlying tunnel, ignoring the foundation pit dewatering for tunnel–soil interaction. Based on this condition, first, the Mindlin solution and the soil effective stress principle are used to obtain the additional stress at the axis of the tunnel under the action of foundation pit excavation and dewatering. Then, the existing tunnel is simplified as a Timoshenko beam lying on the three‐parameter Kerr foundation model. The theoretical solution of tunnel–soil interaction is obtained by Fourier cosine series. Compared with the actual engineering monitoring data, the rationality of the method is verified. Comparison with the results from the Pasternak model and without considering the influence of foundation pit dewatering, the outcomes from the suggested method play a closer resemblance to the measurements. The parametric study shows that increasing the permeability coefficient of soil and depth of dewatering cause the deformation and internal force of the tunnel to decrease slowly. Increasing the depth of the tunnel will cause the deformation and internal force of the tunnel to decrease. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Advances in Civil Engineering is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1155/adce/9999332
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        Text: English
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      – SubjectFull: Timoshenko beam theory
        Type: general
      – SubjectFull: Soil-structure interaction
        Type: general
      – SubjectFull: Excavation (Civil engineering)
        Type: general
      – SubjectFull: Building foundations
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      – SubjectFull: Drainage
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      – SubjectFull: Soil mechanics
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      – SubjectFull: Elasticity
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      – TitleFull: Conceptual Methods to Forecast Tunnel Distortion Resulting From the Overlying Foundation Pit Excavation and Dewatering.
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              Text: 5/29/2026
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