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The deformation and structural performance of subway shield tunnels under adverse top overloading conditions can be generally analyzed in both longitudinal and transverse directions. In terms of longitudinal deformation, the primary manifestation is the differential settlement caused by joint dislocation; whereas transverse deformation is characterized by the transformation from a circular to a transversely elliptical cross-section, often accompanied by longitudinal joint opening or closing.

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Tunnel Transverse Deformation Under Surcharge Loading: Analysis and Model Tests

  • 章节

  • 发表日期：

    2025年

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  • Rulu Wang,
  • Fayun Liang,
  • Jiaping Li,
  • Zhao Yuan

摘要

The deformation and structural performance of subway shield tunnels under adverse top overloading conditions can be generally analyzed in both longitudinal and transverse directions. In terms of longitudinal deformation, the primary manifestation is the differential settlement caused by joint dislocation; whereas transverse deformation is characterized by the transformation from a circular to a transversely elliptical cross-section, often accompanied by longitudinal joint opening or closing.