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

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 nonl...

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Bibliographic Details
Published in:KSCE journal of civil engineering 2019, 23(2), , pp.902-913
Main Authors: Jin, Hao, Yu, Shuo, Zhou, Shunhua, Xiao, Junhua
Format: Article
Language:English
Subjects:
Analysis
Bolted joints
Civil Engineering
Coefficient of friction
Computational efficiency
Computer simulation
Computing time
Deformation
Engineering
Geotechnical Engineering & Applied Earth Sciences
Industrial Pollution Prevention
Internal forces
Mathematical models
Mechanics
Mechanics (physics)
Prefabrication
Seams
Spring
Tunnel Engineering
Tunnel linings
Tunneling shields
Tunnels
토목공학
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Summary: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.
ISSN:1226-7988
1976-3808
DOI:10.1007/s12205-018-0667-5