Long term additional load on a shield tunnel in soft clay due to clay consolidation with water leakage

Shigeaki Oka, Jin Saito, Yoshihiro Ito, Wei Li, Shunsuke Kaneko, Alireza Afshani, Hirokazu Akagi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In soft clay ground, shield tunnels suffer from additional load which is generated due to the consolidation of ground caused by water leakage into the tunnel. Therefore, it is important to make precise predictions of future additional loads when designing tunnel reinforcements. In this paper, the mechanism governing the additional load increase was clarified via three-dimensional FEM analysis. Moreover, a simple method to predict the convergence value of additional loads is proposed, comparing the calculation results of a two-dimensional analysis with the three-dimensional analysis.

Original languageEnglish
Title of host publicationGeotechnical Aspects of Underground Construction in Soft Ground - Proceedings of the 10th International Symposium on Geotechnical Aspects of Underground Construction in Soft Ground, IS-CAMBRIDGE 2022
EditorsMohammed Z.E.B. Elshafie, Giulia M.B. Viggiani, Robert J. Mair
PublisherCRC Press/Balkema
Pages357-364
Number of pages8
ISBN (Electronic)9780367337339
DOIs
Publication statusPublished - 2021
Event10th International Symposium on Geotechnical Aspects of Underground Construction in Soft Ground, IS-CAMBRIDGE 2022 - Cambridge, United Kingdom
Duration: 2022 Jun 272022 Jun 29

Publication series

NameGeotechnical Aspects of Underground Construction in Soft Ground - Proceedings of the 10th International Symposium on Geotechnical Aspects of Underground Construction in Soft Ground, IS-CAMBRIDGE 2022

Conference

Conference10th International Symposium on Geotechnical Aspects of Underground Construction in Soft Ground, IS-CAMBRIDGE 2022
Country/TerritoryUnited Kingdom
CityCambridge
Period22/6/2722/6/29

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction

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