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April 6, 2026Scientific ReportsOpen Access

Model test on longitudinal differential settlement of operational shield tunnel under localized surface loading

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Authors

YZYucheng ZhaoZWZeyang WangQLQingnan Lan

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Overview

Model tests examine differential settlement in shield tunnels under localized surface loading, suggesting design improvements.

Key Points

  • The aim is to investigate the longitudinal differential settlement of operational shield tunnels due to localized surface loading.
  • Conducted engineering case studies on longitudinal differential settlement patterns.
  • Performed similitude model tests to analyze joint effects on differential settlement.
  • Evaluated the impact of factors such as tunnel burial depth and soil properties on deformation.
  • Longitudinal differential settlement decreases with greater burial depth due to enhanced soil arching.
  • Significant influence of local loading on settlement is observed when load offset distance is less than 2D.
  • Settlements increase sharply when traversing a soft soil interlayer with low compression modulus.

Cite This Study

Zhao et al. (2026) studied this question.

synapsesocial.com/papers/69d34e579c07852e0af97f71https://doi.org/10.1038/s41598-026-40003-w
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