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Analytical Algorithm of Longitudinal Bending Stiffness of Shield Tunnel Considering Longitudinal Residual Jacking Force by Dawei Huang; Hao Jiang; Changjie Xu; Xue Li; Tao Zhan is a Engineering article available to read on EtoBox.

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Longitudinal bending stiffness is a fundamental parameter of shield tunnels, and its value directly affects the analysis of their longitudinal response. Existing studies have not considered the tensile stiffness of segment ring joints and longitudinal residual jacking force when determining the value of the longitudinal bending stiffness of an existing shield tunnel. Therefore, through theoretical analysis, this study considered the longitudinal bending deformation under an external load action as two parts, namely the longitudinal bending deformation of the homogeneous pipe and the longitudinal bending deformation induced by the opening of the segment ring joints. An analytical algorithm of the longitudinal bending stiffness of the shield tunnel was obtained, considering that this longitudinal bending stiffness was related to various factors such as the elastic modulus of the material of the segment ring, outer diameter of the shield tunnel, width of the segment ring, number of the segment ring joints and tensile stiffness of the connecting bolt. A scaled shield tunnel model that considered tensile stiffness of the segment ring joints and longitudinal residual jacking force was de

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Author

Dawei Huang; Hao Jiang; Changjie Xu; Xue Li; Tao Zhan

Publisher

Elsevier BV

Published

2023

Language

EN

Field

Engineering (Physical Sciences)