Effect of non-linear soil deformation on the interaction among energy piles

Alessandro Rotta Loria; Aurélien Vadrot; Lyesse Laloui

doi:10.1016/j.compgeo.2016.12.015

Effect of non-linear soil deformation on the interaction among energy piles

Alessandro Rotta Loria^*, Aurélien Vadrot, Lyesse Laloui

^*Corresponding author for this work

Civil and Environmental Engineering

Research output: Contribution to journal › Article › peer-review

10 Scopus citations

Abstract

This study investigates the effect of non-linear soil deformation on the displacement interaction among energy piles. The work is based on interaction factor analyses of full-scale pile group tests, whose results are compared with experimental evidence. The results presented highlight the tendency of interaction factor analyses that ignore non-linear soil deformation to overestimate the interaction and the displacement of energy pile groups. This outcome, in accordance with previous studies for conventional pile groups subjected to mechanical loads, may be considered in the analysis and design of energy pile groups subjected to thermal (and mechanical) loads through the interaction factor method.

Original language	English (US)
Pages (from-to)	9-20
Number of pages	12
Journal	Computers and Geotechnics
Volume	86
DOIs	https://doi.org/10.1016/j.compgeo.2016.12.015
State	Published - Jun 1 2017

Keywords

Continuous model
Energy pile groups
Interaction factor method
Non-linear deformation
Thermo-mechanical behaviour
Vertical displacement

ASJC Scopus subject areas

Geotechnical Engineering and Engineering Geology
Computer Science Applications

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title = "Effect of non-linear soil deformation on the interaction among energy piles",

abstract = "This study investigates the effect of non-linear soil deformation on the displacement interaction among energy piles. The work is based on interaction factor analyses of full-scale pile group tests, whose results are compared with experimental evidence. The results presented highlight the tendency of interaction factor analyses that ignore non-linear soil deformation to overestimate the interaction and the displacement of energy pile groups. This outcome, in accordance with previous studies for conventional pile groups subjected to mechanical loads, may be considered in the analysis and design of energy pile groups subjected to thermal (and mechanical) loads through the interaction factor method.",

keywords = "Continuous model, Energy pile groups, Interaction factor method, Non-linear deformation, Thermo-mechanical behaviour, Vertical displacement",

author = "{Rotta Loria}, Alessandro and Aur{\'e}lien Vadrot and Lyesse Laloui",

note = "Funding Information: The financial support of N. 160117 (Division I-III) from the Swiss National Science Foundation is gratefully acknowledged.",

year = "2017",

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doi = "10.1016/j.compgeo.2016.12.015",

language = "English (US)",

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T1 - Effect of non-linear soil deformation on the interaction among energy piles

AU - Rotta Loria, Alessandro

AU - Vadrot, Aurélien

AU - Laloui, Lyesse

N1 - Funding Information: The financial support of N. 160117 (Division I-III) from the Swiss National Science Foundation is gratefully acknowledged.

PY - 2017/6/1

Y1 - 2017/6/1

N2 - This study investigates the effect of non-linear soil deformation on the displacement interaction among energy piles. The work is based on interaction factor analyses of full-scale pile group tests, whose results are compared with experimental evidence. The results presented highlight the tendency of interaction factor analyses that ignore non-linear soil deformation to overestimate the interaction and the displacement of energy pile groups. This outcome, in accordance with previous studies for conventional pile groups subjected to mechanical loads, may be considered in the analysis and design of energy pile groups subjected to thermal (and mechanical) loads through the interaction factor method.

AB - This study investigates the effect of non-linear soil deformation on the displacement interaction among energy piles. The work is based on interaction factor analyses of full-scale pile group tests, whose results are compared with experimental evidence. The results presented highlight the tendency of interaction factor analyses that ignore non-linear soil deformation to overestimate the interaction and the displacement of energy pile groups. This outcome, in accordance with previous studies for conventional pile groups subjected to mechanical loads, may be considered in the analysis and design of energy pile groups subjected to thermal (and mechanical) loads through the interaction factor method.

KW - Continuous model

KW - Energy pile groups

KW - Interaction factor method

KW - Non-linear deformation

KW - Thermo-mechanical behaviour

KW - Vertical displacement

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