Impact of thermally induced soil deformation on the serviceability of energy pile groups

Alessandro Rotta Loria*, Lyesse Laloui

*Corresponding author for this work

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

Abstract

This paper expands on the impact of the thermally induced deformation of the soil on the serviceability mechanical performance (i.e., deformation-related) of energy pile groups. The work is based on the results of a full-scale in-situ test that was performed on a group of energy piles at the Swiss Tech Convention Centre, Lausanne, Switzerland, and on a series of 3-D thermo-mechanical finite element analyses that were carried out to predict the considered experiment. This study proves that the serviceability mechanical performance of energy pile groups crucially depends on the relative thermally induced deformation of the soil to that of the energy piles. The relative thermally induced deformation of the soil to that of the energy piles is governed by (i) the thermal field characterising the energy pile group and (ii) the relative thermal expansion coefficient of soil to pile. Considering these aspects in the analysis and design of energy pile groups is key because they profoundly characterise the deformation of such foundations.

Original languageEnglish (US)
Title of host publicationAdvances in Laboratory Testing and Modelling of Soils and Shales, ATMSS 2017
EditorsFerrari Ferrari, Lyesse Laloui, Ferrari Ferrari
PublisherSpringer Verlag
Pages421-428
Number of pages8
ISBN (Print)9783319527727
DOIs
StatePublished - 2017
EventInternational Workshop on Advances in Laboratory Testing and Modelling of Soils and Shales, ATMSS 2017 - Villars-sur-Ollon, Switzerland
Duration: Jan 18 2017Jan 20 2017

Publication series

NameSpringer Series in Geomechanics and Geoengineering
ISSN (Print)1866-8755
ISSN (Electronic)1866-8763

Conference

ConferenceInternational Workshop on Advances in Laboratory Testing and Modelling of Soils and Shales, ATMSS 2017
CountrySwitzerland
CityVillars-sur-Ollon
Period1/18/171/20/17

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Mechanics of Materials

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  • Cite this

    Rotta Loria, A., & Laloui, L. (2017). Impact of thermally induced soil deformation on the serviceability of energy pile groups. In F. Ferrari, L. Laloui, & F. Ferrari (Eds.), Advances in Laboratory Testing and Modelling of Soils and Shales, ATMSS 2017 (pp. 421-428). (Springer Series in Geomechanics and Geoengineering). Springer Verlag. https://doi.org/10.1007/978-3-319-52773-4_50