Greenhouse gas emissions produced by fossil fuels are causing a slow change of the
climate's conditions. Air conditioning systems in engineering superstructures demand a …

Based on discussions at the international workshop on “Thermoactive geotechnical systems
for near-surface geothermal energy”, hosted at École Polytechnique Fédérale de Lausanne …

A full-scale experimental site with four energy test piles was built on the campus of the Swiss
Federal Institute of Technology in Lausanne, Switzerland. This site was used to investigate …

This study investigates the impact that different magnitudes and combinations of thermal and
axial mechanical loads have on the mechanical behaviour of energy piles in saturated sand …

Engineering structures embedded in the ground can be utilised as the heat exchange circuit
in shallow geothermal energy systems. Thermally-activated retaining walls supporting the …

The thermal response of an energy field scale pile that is part of a pair of energy piles
spaced at a centre-to-centre distance of 3.5 m (ie, 6 D, where D is the pile diameter), was …

Thermo-active foundations utilise heat energy stored in the ground to provide a reliable and
effective means of space heating and cooling. Previous studies have shown that the effects …

This paper presents the results of a parametric study in which a series of fully coupled, 3-
dimensional thermo-hydro-mechanical Finite Element (FE) analyses has been conducted to …

Despite the widespread research on energy piles, there remain critical knowledge gaps in
the cross-sectional thermal responses of concrete energy piles. This paper implements a …

This study presents a method for estimating the average vertical displacement of energy pile
groups subjected to thermal loads. The method consists of replacing any regular energy pile …