Load transfer approach for the geotechnical analysis of energy piles in a group with slab

Elena Ravera, Melis Sutman, Lyesse Laloui

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

2 Citations (Scopus)
49 Downloads (Pure)


Thermally induced group effects characterise closely spaced energy piles. It has been observed experimentally that the behaviour of energy piles subjected to mechanical and thermal loads, in which the piles are located sufficiently close to each other, is different from the behaviour of single isolated piles. Therefore, civil engineers encounter new challenges in the geotechnical design of such foundations. This leads to the necessity to develop practical tools to address their analysis and design. The conventional load transfer method is one of the commonly used methods for the analysis of axially loaded conventional piles. Thus, the purpose of this study has been to propose a formulation of the load transfer method to consider the thermally induced effects among energy piles in groups. The soil response is characterized in a lumped form by ascribing the behavioural features of the soil to interface elements. The individual response, in terms of strain and stress of an energy pile in a group, can be addressed for the first time through the application of the displacement factor in the load displacement curve of the single isolated energy pile. A validation through a full-scale field test reveals the capability of the approach to provide the necessary information in the analysis and design phases of the foundation for one-way thermal loads.
Original languageEnglish
Title of host publication2nd International Conference on Energy Geotechnics (ICEGT 2020)
PublisherEDP Sciences
Publication statusPublished - 18 Nov 2020
Event2nd International Conference on Energy Geotechnics 2020 - La Jolla, United States
Duration: 20 Sept 202023 Sept 2020

Publication series

NameE3S Web of Conferences
ISSN (Print)2555-0403


Conference2nd International Conference on Energy Geotechnics 2020
Abbreviated titleICEGT 2020
Country/TerritoryUnited States
CityLa Jolla

ASJC Scopus subject areas

  • General Environmental Science
  • General Energy
  • General Earth and Planetary Sciences


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