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Estimating the Effects of Shield Tunnelling on Buried Pipelines Based on a Kerr Foundation Model

  • H. Zhang
  • Z. X. ZhangEmail author
Conference paper
  • 1.9k Downloads
Part of the Springer Geology book series (SPRINGERGEOL)

Abstract

Based on a Kerr-type three-parameter elastic foundation model, a two-stage analytical method for estimating the longitudinal deflection and internal forces of existing pipelines is presented in this paper. With respect to the first stage, the Loganathan and Poulos analytical solution is used to estimate the free-soil settlement caused by shield tunnelling at the existing pipeline’s position; in the second stage, the free-soil settlement is imposed to the existing pipeline, which is simplified as an infinite beam on a Kerr foundation. The governing differential equations of the pipe are formulated and analytically solved, and the deformation and internal forces of the pipeline are obtained. Foundation model parameters are determined by the simplifying elastic continuum method. The superiority of the Kerr foundation model, compared to Winkler foundation model, is verified by numerical results and a real-life case.

Keywords

Shield tunnelling Buried pipeline Kerr foundation model Deflection Analytical solution 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  1. 1.Key Laboratory of Geotechnical and Underground Engineering of Ministry of EducationTongji UniversityShanghaiChina
  2. 2.Department of Geotechnical EngineeringTongji UniversityShanghaiChina

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