Transparent soil model tests and FE analyses on tunneling induced ground settlement

Mahmoud Ahmed, Magued Iskander

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

Abstract

Ground movements due to tunneling are crucial in urban areas where damages to surface structures and utilities should be prevented. In this study, transparent soil models are used to investigate not only the surface settlement profile induced by shield tunneling, but also the distribution of soil deformation within the soil mass near the tunnel. A series of finite element analyses have also been carried out using PLAXIS 2D for the tests conditions. The observed and computed surface settlement profiles are consistent with the normal probability curve commonly used in practice for predicting settlement, with only the inflection points or trough width parameters form the transparent soil models being somewhat different. The measured data is consistent with field measurements in that the trough width parameter is independent of the volume loss and linearly proportional to the tunnel depth. Analysis of the displacement field inside the transparent soil models indicates that subsurface settlement trough at different depths can also be approximated by a normal probability curve.

Original languageEnglish (US)
Title of host publicationGeo-Frontiers 2011
Subtitle of host publicationAdvances in Geotechnical Engineering - Proceedings of the Geo-Frontiers 2011 Conference
Pages3381-3390
Number of pages10
Edition211 GSP
DOIs
StatePublished - May 27 2011
EventGeo-Frontiers 2011: Advances in Geotechnical Engineering - Dallas, TX, United States
Duration: Mar 13 2011Mar 16 2011

Publication series

NameGeotechnical Special Publication
Number211 GSP
ISSN (Print)0895-0563

Other

OtherGeo-Frontiers 2011: Advances in Geotechnical Engineering
CountryUnited States
CityDallas, TX
Period3/13/113/16/11

Keywords

  • Finite element method
  • Ground motion
  • Model tests
  • Settlement
  • Tunneling

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Architecture
  • Building and Construction
  • Geotechnical Engineering and Engineering Geology

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  • Cite this

    Ahmed, M., & Iskander, M. (2011). Transparent soil model tests and FE analyses on tunneling induced ground settlement. In Geo-Frontiers 2011: Advances in Geotechnical Engineering - Proceedings of the Geo-Frontiers 2011 Conference (211 GSP ed., pp. 3381-3390). (Geotechnical Special Publication; No. 211 GSP). https://doi.org/10.1061/41165(397)346