Vibration wave propagation differences in straight assembled shield tunnels under different deformation conditions

Tang, Shilong; Jin, Hao; Ma, Xifeng; Lu, Da; Jiang, Bolong; Sun, Boxu

doi:10.1016/j.istruc.2023.105065

Structures

2023

DOI: 10.1016/j.istruc.2023.105065

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Vibration wave propagation differences in straight assembled shield tunnels under different deformation conditions

Shilong Tang,

Hao Jin,

Xifeng Ma

et al.

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2024

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Cited by 3 publications

References 54 publications

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Dynamic response of a non-circular shallow tunnel with visco-elastic slip interface

Jin,

Liu,

Zhou

et al. 2024

J Mech Sci Technol

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Dynamic response of a non-circular shallow tunnel with visco-elastic slip interface

Jin,

Liu,

Zhou

et al. 2024

J Mech Sci Technol

View full text Add to dashboard Cite

Node-based wave analysis method for the dynamic response and stiffness of long-span cable-stayed bridges

Ji,

Huang,

Akbar

et al. 2024

Structures

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Study on crack law of shield segment under load variation based on XFEM

Guo,

Niu,

Xie

2024

IJSI

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PurposeThe occurrence of segment cracks caused by load changes in shield tunnels would affect the safety of the tunnel structure. To this end, a three-dimensional fine shield tunnel segment model based on the extended finite element method (XFEM) is established.Design/methodology/approachThe cracking law of shield segment cracks is studied in two forms: overloading and unloading. The relationship between crack length, width and depth and transverse convergence and deformation is analyzed.FindingsThe results show that the cracks in shield tunnels mainly occur on the outer side of the arch waist and the inner side of the crown and bottom. Under overloading and unloading conditions, the length, width and depth of cracks increase non-linearly as the transverse convergence deformation increases. Under the same convergent deformation, the deeper the buried depth, the smaller the crack length, width and depth. Meanwhile, under overloading conditions, the influence of buried depth on the width and depth of cracks is more significant. In terms of crack width and depth, unloading conditions are more dangerous than overloading conditions.Originality/valueThe findings have a guiding effect for the management of cracks in shield tunnels during operation.

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Vibration wave propagation differences in straight assembled shield tunnels under different deformation conditions

Cited by 3 publications

References 54 publications

Dynamic response of a non-circular shallow tunnel with visco-elastic slip interface

Dynamic response of a non-circular shallow tunnel with visco-elastic slip interface

Node-based wave analysis method for the dynamic response and stiffness of long-span cable-stayed bridges

Study on crack law of shield segment under load variation based on XFEM

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