Publications by Alessandro Francesco Rotta Loria

Performance of complex energy geostructures

Lyesse Laloui, Alessandro Francesco Rotta Loria, Elena Ravera

2024

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

Thermal performance of energy barrettes in an urban environment

Lyesse Laloui, Alessandro Francesco Rotta Loria, Elena Ravera

TU Delft OPEN Publishing2023

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

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

Lyesse Laloui, Alessandro Francesco Rotta Loria, Marianna Adinolfi

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

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

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

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

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

Lyesse Laloui, Qazim Llabjani, Alessandro Francesco Rotta Loria, 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

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

Lyesse Laloui, Qazim Llabjani, Alessandro Francesco Rotta Loria, 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

Heat exchanger module and methods of using thereof

Lyesse Laloui, Alessandro Francesco Rotta Loria

The invention provides in one embodiment a heat exchanger module (1) comprising a) a flexible support (100); b) at least one tubular member (200) having its main axis substantially parallel with the plane of the flexible support (100); c) a conductive flex ...

2020

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

The role of thermal loads in the performance-based design of energy piles

Lyesse Laloui, Aurelio Muttoni, Cristiano Garbellini, Alessandro Francesco Rotta Loria, Matteo Bocco

Over the past two decades, a substantial amount of research has investigated the effects of thermal loads associated with the geothermal operation of energy piles on their mechanical response. Based on this research, consensus about the need for considerin ...

2019

Thermo-mechanical schemes for energy piles

Lyesse Laloui, Alessandro Francesco Rotta Loria, Alberto Minardi

Currently, schemes based on seminal empirical knowledge about energy piles subjected to mechanical and thermal loads are available to describe the response of such foundations. However, schemes based on theoretical principles may more closely reflect the p ...

Springer Verlag2019

Performance-based Design of Energy Pile Foundations

Alessandro Francesco Rotta Loria

Over the past twenty years, an increasing amount of research has been performed to understand the multiphysical behaviour and to address the geotechnical and structural design of so-called energy piles, i.e. deep foundations that can serve any superstructu ...

2019

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

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

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

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

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

Group action effects caused by various operating energy piles

Lyesse Laloui, Alessandro Francesco Rotta Loria

To date, no field data referring to various operating energy piles over time-scales of practical applications had been made available to investigate the thermally induced “group action”. This paper presents the results of a full-scale field test and a thre ...

2018

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

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

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

Lyesse Laloui, Alessandro Francesco Rotta Loria, Aurélien Vadrot

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. Th ...

Elsevier2017

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