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KSCE Journal of Civil Engineering

, Volume 23, Issue 2, pp 902–913 | Cite as

Research on Mechanics of Longitudinal Joint in Shield Tunnel by the Nonlinear Spring Equivalent Method

  • Hao Jin
  • Shuo YuEmail author
  • Shunhua Zhou
  • Junhua Xiao
Tunnel Engineering
  • 19 Downloads

Abstract

Shield tunnel lining is mainly composed of prefabricated segment, accurate description of longitudinal seam joint mechanics is important for design and analysis of shield tunnel segmental linings, however, due to its stress state is complex and internal force changes show the characteristics of nonlinear, there is no more rapid and accurate calculation model to analysis the mechanics. In the view of the problem of the entity unit simulating bolt bending with low computing speed, the model of shield tunnel longitudinal seam that using the nonlinear spring to simulate bending bolt joint is proposed. Combined with longitudinal seam joint test, analysis the entity model and spring bolt model, the study concluded that: 1) the calculation results of spring bolt model are closer to the test results than entity unit model; and 2) calculation efficiency of spring bolt model bolt up 1 times than the physical model. Based on the spring bolt model, further study the relationship between viscous coefficient, friction coefficient and calculation efficiency, and analyzes the regularity of deformation and damage of shield tunnel connection.

Keywords

longitudinal joint bending bolt nonlinear spring segment shield tunnel 

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Copyright information

© Korean Society of Civil Engineers and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.College of Transportation EngineeringTongji UniversityShanghaiChina

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