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Alessandro Francesco Rotta Loria

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Related publications (39)

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Thermo-mechanical performance of energy pile groups

Alessandro Francesco Rotta Loria

Employing geostructures as structural supports and geomaterials as reservoirs for the extraction and storage of heat represent effective means to meet human activity needs since ancient times. This doctoral thesis focuses on the thermo-mechanical behaviour ...

EPFL2018

Experimental and numerical investigation of the thermo-mechanical behaviour of an energy sheet pile wall

Lyesse Laloui, Alessandro Francesco Rotta Loria

One-of-a-kind experimental and numerical investigation is provided in this paper about energy sheet pile walls: earth retaining structures that embed heat exchanger probes within piles for the exploitation of shallow geothermal energy. The study resorts to ...

2021

Serviceability assessment of energy pile groups through design charts

Lyesse Laloui, Alessandro Francesco Rotta Loria

The estimation of the vertical displacement of energy pile groups subjected to thermal (and mechanical) loads is needed for a complete geotechnical and structural design of the piles in situations where these foundations may be located sufficiently close t ...

2017

Energy performance and economic feasibility of energy segmental linings for subway tunnels

Lyesse Laloui, Alessandro Francesco Rotta Loria, Benoît Claude Henri Cousin

This study focuses on the analysis of the energy performance and economic feasibility of so-called tunnel energy segmental linings: an innovative technology that couples the structural support role of the tunnel lining with the heating-cooling role of the ...

2019

Numerical study of the response of a group of energy piles under different combinations of thermo-mechanical loads

Lyesse Laloui, Alessandro Francesco Rotta Loria, Alice Di Donna

Energy piles are rapidly gaining acceptance around the world because they represent a renewable and clean source of energy that can be used for the heating and cooling of buildings, and the de-icing of infrastructures. This technology couples the structura ...

Elsevier2016

Thermally induced group effects among energy piles

Lyesse Laloui, Alessandro Francesco Rotta Loria

The behaviour of conventional pile groups (e.g., closely spaced) that are subjected to mechanical loads has been shown to be different than the behaviour of single isolated piles. The so-called group effects are responsible for this behaviour and must be c ...

2017

Analysis of the vertical displacement of energy pile groups

Lyesse Laloui, Alessandro Francesco Rotta Loria

Over the last fifty years, the interaction factor method has been widely used to address the vertical displacement and the increased deformation of conventional pile groups subjected to mechanical loads when group effects and interactions occur among the p ...

2018

Numerical investigation of the convection heat transfer driven by airflows in underground tunnels

Lyesse Laloui, Alessandro Francesco Rotta Loria, Margaux Marie Valérie Peltier

This study presents a fundamental investigation of the convection heat transfer phenomenon driven by airflows in underground tunnels, with reference to the development of the so-called thermal and velocity boundary layers. The purpose of the work is to exp ...

PERGAMON-ELSEVIER SCIENCE LTD2019

Equivalent pier analysis of full-scale pile groups subjected to mechanical and thermal loads

Lyesse Laloui, Alessandro Francesco Rotta Loria

This study presents an equivalent pier analysis of the vertical deformation and displacement of full-scale pile groups subjected to mechanical and thermal loads that are associated with a structural support and a geothermal heat exchanger operation, respec ...

2020

Extension of Winkler’s solution to non-isothermal conditions for capturing the behaviour of plane geostructures subjected to thermal and mechanical actions

Lyesse Laloui, Alessandro Francesco Rotta Loria, Qazim Llabjani, Jacopo Zannin

Before this study, no analytical models had been made available for describing the behaviour of plane geostructures subjected to thermal and mechanical actions. This knowledge gap notably represented a limitation for investigations about the behaviour of s ...

2020

Recent development in the multiphysical analysis and design of energy piles

Lyesse Laloui, Alessandro Francesco Rotta Loria

This study proposes an analysis of the multiphysical phenomena governing the thermo-mechanical behaviour of energy piles. The analysis is based on the results of a series of full-scale in-situ tests, laboratory experiments and numerical analyses. First, th ...

2017

Analysis of barrette foundations subjected to mechanical and thermal loads

Lyesse Laloui, Alessandro Francesco Rotta Loria

In recent years, there has been increasing interest in the use of rectangular barrette foundations for the structural support and energy supply of tall buildings when circular piles become inefficient or uneconomical. In such applications, so-called energy ...

2022

The equivalent pier method for energy pile groups

Lyesse Laloui, Alessandro Francesco Rotta Loria

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 group with a single equivalent pier of the same length and an equivalen ...

2017

The interaction factor method for energy pile groups

Lyesse Laloui, Alessandro Francesco Rotta Loria

Prior to this study, no simplified yet rational methods were available for estimating the vertical displacements of energy pile groups subjected to thermal loads. Observing such a challenge, the goal of this study has been threefold: (i) to extend the inte ...

Elsevier2016

The role of thermally induced soil deformation on the serviceability of energy piles

Lyesse Laloui, Alessandro Francesco Rotta Loria

This paper investigates the impact of the thermally induced deformation of 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 ...

2016

Analytical solution for describing the thermo-mechanical behavior of plane energy geostructures

Lyesse Laloui, Alessandro Francesco Rotta Loria, Qazim Llabjani, Jacopo Zannin

Over the past twenty years, a substantial amount of research has been performed to expand the modeling capabilities of energy geostructures: innovative earth-contact structures that provide combined structural support and renewable energy supply. Several a ...

EDP Sciences2020

Thermo-hydro-mechanical behavior of energy barrettes: Field experiments and numerical simulations

Lyesse Laloui, Alessandro Francesco Rotta Loria, Elena Ravera

Over the past two decades, the thermo-hydro-mechanical behavior of earth-contact structures such as piles, walls, slabs, and tunnels, which simultaneously provide structural support and energy supply, has been studied through various field experiments and ...

ELSEVIER2023

Machine learning enhancement of thermal response tests for geothermal potential evaluations at site and regional scales

Lyesse Laloui, Alessandro Francesco Rotta Loria, Benoît Claude Henri Cousin

This study explores and validates a machine learning approach for the practical, effective, and precise prediction of the thermo-physical characteristics that are essential for the analysis and design of shallow geothermal systems, including borehole heat ...

2021

The equivalent pier method for energy pile groups

Lyesse Laloui, Alessandro Francesco Rotta Loria

2017

Performance of complex energy geostructures

Lyesse Laloui, Alessandro Francesco Rotta Loria, Elena Ravera

2024