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Numerical simulation of centrifuge seismic tests on tunnel in sandy soil

  • M. Ochmański
  • , M. Delli Carpini
  • , E. Salvatore
  • , G. Modoni
  • , E. Bilotta
  • University of Cassino and Southern Lazio
  • Laboratoire 3SR Grenoble

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

1 Citation (Scopus)

Abstract

Centrifuge seismic tests on small-scale physical models of tunnel in sandy soil are herein reproduced with a numerical calculation to investigate the simulation capability of a numerical model. The soil behavior under monotonic and cyclic loading is simulated fitting laboratory tests with a hypoplastic constitutive model (von Wolffersdorff 1996) coupled to the intergranular strain concept (Niemunis & Herle 1997). Four centrifuge tests have been back-analyzed, reproducing the combinations of tunnel at two depths in two different soil densities. The results from the numerical analyses are compared with those obtained from the tests and with other numerical simulations previously performed in a round robin tests. The simulation proves able to capture observations and to well reproduce ground deformation in all cases. Afterwards, a parametric analysis has been performed modifying the Coulomb friction coefficients at the soil-lining interface to show the relevance of this parameter on the stresses mobilized in the lining.

Original languageEnglish
Title of host publicationEarthquake Geotechnical Engineering for Protection and Development of Environment and Constructions- Proceedings of the 7th International Conference on Earthquake Geotechnical Engineering, 2019
EditorsFrancesco Silvestri, Nicola Moraci
PublisherCRC Press/Balkema
Pages4162-4170
Number of pages9
ISBN (Print)9780367143282
Publication statusPublished - 2019
Event7th International Conference on Earthquake Geotechnical Engineering, ICEGE 2019 - Rome, Italy
Duration: 17 Jan 2019 → 20 Jan 2019

Publication series

NameEarthquake Geotechnical Engineering for Protection and Development of Environment and Constructions- Proceedings of the 7th International Conference on Earthquake Geotechnical Engineering, 2019

Conference

Conference7th International Conference on Earthquake Geotechnical Engineering, ICEGE 2019
Country/TerritoryItaly
CityRome
Period17/01/19 → 20/01/19

ASJC Scopus subject areas

  • General Environmental Science
  • General Earth and Planetary Sciences

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