Improved analytical model for circumferential behavior of jointed shield tunnels considering the longitudinal differential settlement

Wenping Gong, C. Hsein Juang, Hongwei Huang, Jie Zhang, Zhe Luo

Research output: Contribution to journalArticlepeer-review

20 Scopus citations

Abstract

Differential settlements of the shield tunnel along the longitudinal direction can significantly affect the circumferential behavior of segmental lining, degrading both the structure safety and serviceability. In this paper, the authors introduce both the shearing effect and flattening effect on the tunnel cross section, which was caused by the longitudinal differential settlement, into an existing analytical model of jointed shield tunnels. An example is then presented to illustrate the variation of the circumferential behavior of segmental lining, including both the structure safety and serviceability, along the longitudinal position. Finally, a series of parametric studies are performed to investigate how factors such as tunnel longitudinal settlement, property of surrounding ground, and the design parameters of segmental lining affect the circumferential behavior of the segmental lining.

Original languageEnglish
Pages (from-to)153-165
Number of pages13
JournalTunnelling and Underground Space Technology
Volume45
DOIs
StatePublished - 1 Jan 2015

Keywords

  • Circumferential behavior
  • Differential settlement
  • Flattening effect
  • Shearing effect
  • Shield tunnel

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