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Lyesse Laloui

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Publications associées (386)

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

Thermo-mechanical volume change behaviour of Opalinus Clay

Lyesse Laloui, Alessio Ferrari, Valentina Favero

The paper examines the thermo-mechanical volume change behaviour of Opalinus Clay in relation to different stress conditions and overconsolidation ratio (OCR) values and evaluates the impact of temperature on some hydro-mechanical properties of this materi ...

Elsevier2016

Contribution to the design methodologies of piled raft foundations under combined loadings

Lyesse Laloui

Although simplified methods have been proposed to allow for group effect and soil-pile-raft interaction, most of them are concentrated on one type of loading rendering the applicability of these methods rather limited to cases under such loads. In the case ...

National Research Council Canada2016

One-dimensional Compression and Consolidation of Shales

Lyesse Laloui, Alessio Ferrari, Valentina Favero

This paper presents a comprehensive methodology for analysing the compression and consolidation behaviour of shales. An apparatus was designed to perform oedometric high-pressure tests by applying a maximum vertical total stress of 100 MPa and simultaneous ...

Elsevier2016

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

Centrifuge modelling of heating effects on energy pile performance in saturated sand

Lyesse Laloui, Chao Shi

The operation of energy pile in summer can expel excessive heat of the buildings into the ground by the use of a heat pump. Despite of having been implemented for decades, the design of energy pile still relies heavily on empiricism as there is still limit ...

National Research Council Canada2015

Potential fracture propagation into the caprock induced by cold CO2 injection in normal faulting stress regimes

Lyesse Laloui, Victor Vilarrasa Riano

Thermal effects are an important component in the analysis of geologic carbon storage because the injected CO2 reaches the storage formation at a lower temperature than that of the reservoir rock. The main fear is related to the possibility that the shear ...

2015

Numerical modelling of energy piles in saturated sand subjected to thermo-mechanical loads

Lyesse Laloui, Chao Shi, Alessandro Francesco Rotta Loria

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. The work is based on the results of a series of thermo-hydro-mechanical ...

2015

Hydro-mechanical Behaviour of Reconstituted and Intact Shales

Lyesse Laloui, Alessio Ferrari, Valentina Favero

2015

Estimating soil thermal diffusivity with interference analyses

Lyesse Laloui, Thomas Mimouni

The development of ground source heat pumps has facilitated the use of geothermal power at shallow depths. Initially, ground heat exchangers were buried in trenches or boreholes, but recent investigations and increasing congestion of landscapes have sugges ...

Springer Verlag2015

The role of null point movements on the thermo-mechanical analysis of energy piles

Lyesse Laloui, Alessandro Francesco Rotta Loria

2015

A hydromechanical approach to assess CO2 injection-induced surface uplift and caprock deflection

Lyesse Laloui, Chao Li

This study focuses on the derivation of a semi-analytical approach for the evaluation of surface uplift and caprock deflection induced by underground injection of CO2. The adopted methodology includes the development of a mathematical model that incorporat ...

2015

Effect of treatment on the microstructural characteristics of bio-improved sand

Lyesse Laloui, Dimitrios Terzis

Bio-chemical processes have recently become the core of several studies in the geoengineering field, where the emphasis is placed on new and emerging applications. Microbially Induced Calcite Precipitation has been introduced as an alternative cementation ...

IOS Press, 20152015

Constitutive analysis of shale: a coupled damage plasticity approach

Lyesse Laloui, Francesco Parisio

Shales have become increasingly important because they play key roles in modern energy and environmental geomechanics applications, such as nuclear waste storage, non-conventional oil and gas operations and CO2 geological storage. Shale behaves in a quasi- ...

Elsevier2015

Numerical study on the suitability of centrifuge testing for capturing the thermal-induced mechanical behavior of energy piles

Lyesse Laloui, Alice Di Donna, Alessandro Francesco Rotta Loria

Currently, the suitability of centrifuge testing for capturing the thermal-induced mechanical behavior of full-scale energy piles has not been established, yet, despite their increasing worldwide development. Looking at this challenge, this paper investiga ...

American Society of Civil Engineers2015

Energy and geotechnical behaviour of energy piles for different design solutions

Lyesse Laloui, Alessandro Francesco Rotta Loria, Niccolò Batini

Energy piles are heat capacity systems that have been increasingly exploited to provide both supplies of energy and structural support to civil structures. The energy and geotechnical behaviours of such foundations, which are governed by their response to ...

Elsevier2015

Predicting the axial capacity of piles in sand

Jean-Marie Fuerbringer, Lyesse Laloui, Luis Felipe Orellana Espinoza, Alessandro Francesco Rotta Loria, Alberto Minardi

Currently, although several tools have been proposed for the numerical modelling of the pile-soil interface, there is not a well-established framework concerning the quantitative impact that different estimations of the mechanical properties of this settin ...

Elsevier2015

Hydro-mechanical behaviour of shot-clay bentonite

Lyesse Laloui, Alessio Ferrari, Ali Seiphoori

Experimental tests were conducted to characterise the hydro-mechanical behaviour of shot-clay MX-80 bentonite. Granular bentonite was mixed continuously with water and shot on the walls of a tunnel section at the Grimsel Underground Research Laboratory (UR ...

Taylor & Francis2015

Behaviour of a group of energy piles

Lyesse Laloui, Thomas Mimouni

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 interaction effects within a group of energy piles. First, the groun ...

Canadian Science Publishing, Nrc Research Press2015

Numerical study on the thermo-mechanical interactions of a group of energy piles under cooling loads

Lyesse Laloui, Alessandro Francesco Rotta Loria

2015

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