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Nathanaël Savalle is currently a Postdoctoral researcher at ISISE, UMinho and works in the ERC-AdG project Stand4Heritage. He obtained his Civil Engineer (Ecole Centrale de Lyon, France) and Research Master (University of Lyon, France) degrees in 2016. During this period, he acquired a solid scientific background in fluid and solid mechanics, physics, mathematics, chemistry, electronics, control engineering, with a specialisation in Civil Engineering. Nathanaël defended his PhD three years after in 2019, at the University of Lyon with the title: "Seismic behaviour of slope dry stone retaining walls". Throughout the thesis, Nathanaël developed strong skills in experimental testing (DIC systems, tilting tests and shaking table tests), analytical modelling (Limit Analysis, Pseudo-static approach) and numerical modelling (Discrete Element Method). The thesis project aimed to provide recommendations for the seismic design of dry stone retaining walls. For this purpose, he developed an analytical tool based on the pseudo-static approach, which allows a fast computational time. Dynamic experiments and simulations then helped to identify an appropriate behaviour factor for dry-joint masonry retaining structures that can weigh the analytical predictions. Finally, general recommendations have been deduced for the seismic design of dry stone retaining walls following the Eurocodes. Some particular case studies for France have also been conducted. Nathanaël also spent five months in Berlin in 2015, where he participated in a research project, SEMA, on the asset management of sewer networks. In particular, he developed methodologies to characterise the uncertainty of the manual sewer inspection results. Similarly, he conducted many experimental characterisation tests of soils (Proctor, Atterberg, VBS) in the framework of ARRCANE project in 2014. His current research interests include: shaking table tests, masonry behaviour, retaining structures, rocking, discrete element modelling, control theories, machine learning, limit analysis, DIC, experimental testing, geometrical design. Nathanaël supervised a scholarly research project with two students (M1 level) and is currently supervising a PhD student. He also served as a lecturer at Ecole Centrale de Lyon, teaching beam theory, soils mechanics and FEM modelling. Despite his young age, he already published five journal articles and has a promising track record (H-index = 2). Finally, his computer skills include software such as MATLAB, UDEC - 3DEC, CATIA, R, ANSYS, Rhinoceros, MS Office, LateX, C#, Inventor, VBA, Python.
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Identification

Personal identification

Full name
Nathanaël SAVALLE
Date of birth
1993/12/16
Gender
Male

Citation names

  • SAVALLE, Nathanaël

Author identifiers

Ciência ID
291B-4307-A09F
ORCID iD
0000-0001-5183-6260
Google Scholar ID
https://scholar.google.fr/citations?user=5SeT3L0AAAAJ&hl=fr&oi=ao
Researcher Id
AAE-1630-2021
Scopus Author Id
57202464460

Email addresses

  • n.savalle@civil.uminho.pt (Professional)
  • nathanael.savalle@yahoo.fr (Personal)

Telephones

Mobile phone
  • (+351) 926054920 (Professional)
  • (+33) 646150418 (Personal)

Addresses

  • Campus de Azurém, 4800-058, Axurém, Guimarães, Portugal (Professional)

Websites

Knowledge fields

  • Engineering and Technology - Civil Engineering

Languages

Language Speaking Reading Writing Listening Peer-review
English Proficiency (C2) Proficiency (C2) Proficiency (C2) Proficiency (C2) Proficiency (C2)
French (Mother tongue)
Portuguese Upper intermediate (B2) Upper intermediate (B2) Upper intermediate (B2) Upper intermediate (B2) Upper intermediate (B2)
German Intermediate (B1) Intermediate (B1) Intermediate (B1) Intermediate (B1) Elementary (A2)
Education
Degree Classification
2016/10/01 - 2019/10/09
Concluded
 Ph.D in Civil Engineering (Doctorat)
École Centrale de Lyon, France

Université de Lyon, France
"Seismic behaviour of slope dry stone retaining walls" (THESIS/DISSERTATION)
2015/09/30 - 2016/10/01
Concluded
 Research Master in Science, Technology and health (Postgraduate Certificate)
Major in Mechanics, Energetics, Civil Engineering and Acoustique
Université de Lyon, France
 Civil Engineering 15.5/20
2012/09/01 - 2016/09/30
Concluded
 Generalist Engineer (Postgraduate Certificate)
Major in Civil engineering
École Centrale de Lyon, France
"Comportement sismique des murs de soutènement de talus en pierre sèche" (THESIS/DISSERTATION)
 Congratulations of the jury
2013/09/01 - 2014/04/30
Concluded
 English classes - TOEFL (Maîtrise)
École Centrale de Lyon, France
 613/677
Affiliation

Science

Category
Host institution 		Employer
2020/04/01 - Current Postdoc (Research) Universidade do Minho, Portugal
2016/04/01 - 2019/10/01 Researcher (Research) École Centrale de Lyon, France
2015/04/01 - 2015/08/31 Research Trainee (Research) Kompetenzzentrum Wasser Berlin gGmbH, Germany
2014/05/01 - 2014/11/30 Research Trainee (Research) Institut National des Sciences Appliquées de Lyon, France

Teaching in Higher Education

Category
Host institution 		Employer
2016/10/01 - 2019/09/30 Assistant (University Teacher) École Centrale de Lyon, France
Projects

Grant

Designation Funders
2020/04/01 - Current STAND4HERITAGE - New STANDards for seismic assessment of built cultural HERITAGE
833123
Post-doc Fellow
Universidade do Minho, Portugal
 European Research Council
Ongoing
2015/04/01 - 2015/08/31 Asset Management Strategies for Sewer Systems
SEMA
Master Student Fellow
Kompetenzzentrum Wasser Berlin gGmbH, Germany
Concluded
2014/05/01 - 2014/11/30 Action des adjuvants pour le Recyclage des matériaux de Remblai sur les Canalisations Enterrées
ARRCANE
Master Student Fellow
INSAVALOR SA, France
 ADEME Centre de Paris
Concluded

Contract

Designation Funders
2016/04/01 - 2016/09/01 PRIMATERRE
ANR-126VBU-0001-06
Researcher
Concluded
Outputs

Publications

Book chapter
  1. Vincens, Éric; Savalle, Nathanaël; Cornu, Claire. "Dry stone, old but innovative". In Pre and Protohistoric Stone Architectures: Comparisons of the Social and Technical Contexts Associated to Their Building, 27-35. France, 2021.
    Published
Conference paper
  1. Colombo, Carla; Vlachakis, Georgios; SAVALLE, Nathanaël; Funari, Marco Francesco; A.I. Giouvanidis; Karimzadeh, Shaghayegh; Lourenço, Paulo B.. "Experimental investigation of the horizontal load direction influence on masonry corner failure". Paper presented in Mechanics of Masonry Structures Strengthened with composite Materials, 2022.
    Accepted
  2. Vlachakis, Georgios; Colombo, Carla; Anastasios I. Giouvanidis; SAVALLE, Nathanaël; Lourenço, Paulo B.. "Interface stiffness identification of dry-joint masonry structures through an extended experimental campaign". Paper presented in Test&e 2022, 2022.
    Accepted
  3. Colombo, Carla; Fernandes, Luciano; Funari, Marco Francesco; SAVALLE, Nathanaël; Lourenco, Paulo. "Large static testing equipment: design and first use of titling and settlement facilities". Paper presented in Test&e 2022, 2022.
    Accepted
  4. SAVALLE, Nathanaël; Vincens, Éric; Lourenço, Paulo B.. "Pseudo-static analytical model for the static and seismic stability of dry stone retaining walls". Paper presented in 7th International Conference on Geotechnical Research and Engineering (ICGRE'21), Lisbon, 2022.
    Submitted
  5. Vlachakis, Georgios; Colombo, Carla; Giouvanidis, Anastasios I.; Mehrotra, Anjali; Savalle, Nathanaël; Lourenço, Paulo B.. "An Equivalent Viscous Damping Proposal for Block-Based Rocking Models". Paper presented in COMPDYN 2021 - 8th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering, Athens, 2021.
    Published
  6. Savalle, Nathanaël; Mousavian, Elham; Colombo, Carla; Lourenço, Paulo B.. "FAST GENERATIVE TOOL FOR MASONRY STRUCTURES GEOMETRIES". Paper presented in 14th Canadian Masonry Symposium, Montréal, 2021.
    Submitted
  7. Colombo, Carla; Savalle, Nathanaël; Fernandes, Luciano; Lourenço, Paulo B.. "TILTING TESTS FOR MASONRY STRUCTURES: DESIGN AND PRELIMINARY NUMERICAL MODELING". Paper presented in 14th Canadian Masonry Symposium, Montréal, 2021.
    Submitted
  8. Savalle, Nathanaël; Vincens, Éric; Dedecker, Fabbian. "DEM MODELLING OF DRY STONE RETAINING WALLS". Paper presented in Congress on Numerical Methods (CMN2019), Guimarães, 2019.
  9. Savalle, Nathanaël; Vincens, Éric; Hans, Stéphane. "Design of dry stone retaining walls in and out of seismic area". Paper presented in Congrès International de la Pierre Sèche (CIPS2018), Minorque, 2018.
  10. Vincens, Éric; Savalle, Nathanaël; Cornu, Claire. "Dry stone, old but innovative". Paper presented in UISPP18, Paris, 2018.
  11. Savalle, Nathanaël; Vincens, Éric; Hans, Stéphane. "Comportement sismique d'ouvrages en maçonnerie à joint sec : etudes analytique, expérimentale et numérique". Paper presented in Journées Nationales de la Maçonnerie, Marne la Vallée, 2018.
  12. Savalle, Nathanaël; Vincens, Éric; Hans, Stéphane. "Seismic behaviour of dry stone retaining walls: Experimental and numerical pseudo-static studies". 2018.
    Published
  13. Vincens, Éric; Savalle, Nathanaël. "Scientific research in the service of dry-stone in France". Paper presented in Med-stone congress, Mallorca, 2017.
  14. Savalle, Nathanaël; Vincens, Éric; Hans, Stéphane. "Scale-down pseudo-static experiments on Dry Stone Retaining Walls". Paper presented in Congrès Français de Mécanique (CFM17), Lille, 2017.
    Published
Journal article
  1. Nathanaël Savalle; Paulo B. Lourenço; Gabriele Milani. "Joint Stiffness Influence on the First-Order Seismic Capacity of Dry-Joint Masonry Structures: Numerical DEM Investigations". Applied Sciences (2022): https://doi.org/10.3390/app12042108.
    10.3390/app12042108
  2. Savalle, Nathanaël; Blanc-Gonnet, Joachim; Vincens, Éric; Hans, Stéphane. "Dynamic behaviour of drystone retaining walls: shaking table scaled-down tests". European Journal of Environmental and Civil Engineering (2020): https://doi.org/10.1080/19648189.2020.1855477.
    10.1080/19648189.2020.1855477
  3. Savalle, Nathanaël; Vincens, Éric; Hans, Stéphane. "Experimental and numerical studies on scaled-down dry-joint retaining walls: Pseudo-static approach to quantify the resistance of a dry-joint brick retaining wall". Bulletin of Earthquake Engineering 18 2 (2020): 581-606. https://doi.org/10.1007/s10518-019-00670-9.
    10.1007/s10518-019-00670-9
  4. Savalle, Nathanaël; Vincens, Éric; Hans, Stéphane. "Correction to: Experimental and numerical studies on scaled-down dry-joint retaining walls: Pseudo-static approach to quantify the resistance of a dry-joint brick retaining wall". Bulletin of Earthquake Engineering 18 2 (2020): 607-608. https://doi.org/10.1007/s10518-019-00702-4.
    10.1007/s10518-019-00702-4
  5. Savalle, Nathanaël; Vincens, Éric; Hans, Stéphane. "Pseudo-static scaled-down experiments on dry stone retaining walls: Preliminary implications for the seismic design". Engineering Structures 171 (2018): 336-347. http://www.scopus.com/inward/record.url?eid=2-s2.0-85048493549&partnerID=MN8TOARS.
    10.1016/j.engstruct.2018.05.080
Newspaper article
  1. Funari, Marco Francesco; SAVALLE, Nathanaël; Silva, Luís C.; Lourenço, Paulo B.. "A concurrent micro/macro FE-model optimized with a limit analysis tool for the assessment of dry-joint masonry structures", International Journal for Multiscale Computational Engineering, 2021
    10.1615/IntJMultCompEng.2021040212

Other

Other output
  1. A tool for the fast generation of masonry specimens. Generative algorithm for masonry geometries - a demo video.. 2021. Savalle, Nathanaël. https://stand4heritage.org/news/a-tool-for-the-fast-generation-of-masonry-specimens/.
Activities

Oral presentation

Presentation title Event name
Host (Event location)
2021/06/10 DÉTERMINATION DU COEFFICIENT DE COMPORTEMENT POUR LE DIMENSIONNEMENT SISMIQUE DES MURS DE SOUTÈNEMENT EN PIERRE SÈCHE Jounées Nationales de la Maçonnerie
(France)
2021/05/19 FAST GENERATIVE TOOL FOR MASONRY STRUCTURES GEOMETRIES 14th Canadian Masonry Symposium
2019/11/19 Le retour de la pierre sèche dans la construction Club eospace - networking
(Lyon, France)
2019/10/09 Comportement sismique des murs de soutènement en pierre sèche PhD Defense
(Lyon, France)
2019/07/03 DEM MODELLING OF DRY STONE RETAINING WALLS Congress on Numerical Methods (CMN2019)
(Guimarães, Portugal)
2018/07/09 SEISMIC BEHAVIOUR OF DRY STONE RETAINING WALLS: EXPERIMENTAL AND NUMERICAL PSEUDO-STATIC STUDIES 10th International Masonry Conference (IMC10)
(Milano, Italy)
2018/03/23 Comportement sismique d'ouvrages en maçonnerie à joint sec : etudes analytique, expérimentale et numérique Journées nationales de la Maçonnerie (JNM18)
(Marne la Vallée, France)
2017/11/16 Expériences pseudo-statiques sur des murs de soutènement en pierre sèche Colloque des doctorants
(Saint-Étienne, France)
2017/08/30 Scale-down pseudo-static experiments on Dry Stone Retaining Walls Congrès Français de Mécanique
(Lille, France)

Supervision

Thesis Title
Role 		Degree Subject (Type)
Institution / Organization
2021/08/01 - Current Tilting tests on masonry arches
Co-supervisor
2020/04/01 - Current Experimental validation of the reliability of intermediate modelling two-step approaches for the seismic assessment of masonry structures.
Supervisor of Colombo, Carla
Universidade do Minho - Campus de Azurém, Portugal
2022/04/01 - 2022/09/30 Masonry arches: Discrete Element Modelling and experiments
Supervisor
Universidade do Minho - Campus de Azurém, Portugal
2018/09/01 - 2019/04/30 Bearing capacity failure of dry stone retaining walls
Supervisor of Adbou Diallo & Agathe Gambert
 Initiation to research projects (Master)
École Centrale de Lyon, France

Event organisation

Event name
Type of event (Role) 		Institution / Organization
2018/01/22 - 2018/01/24 Workshop - GeoMech (2018/01 - 2018/01)
Workshop (Member of the Organising Committee)
 École Centrale de Lyon, France

Association member

Society Organization name Role
2018/01/01 - Current Fédération Française des Professionnels de la Pierre Sèche Researcher
2017/09/01 - 2019/09/01 Association des Doctorants de L'ECL Responsible for sport activities for staff members at Ecole Centrale de Lyon

Course / Discipline taught

Academic session Degree Subject (Type) Institution / Organization
2018/09/01 - 2019/09/01 Practical works: Soils characterisation - 8 hours Engineer Degree (Master Level) - M1 École Centrale de Lyon, France
2018/09/01 - 2019/09/01 Supervisor: Research project - 10 hours Engineer Degree (Master Level) - M1 École Centrale de Lyon, France
2017/09/01 - 2019/09/01 Lecturer: Material plasticity: Finite Element simulations - 20 hours Engineer Degree (Master Level) - L3/M1 École Centrale de Lyon, France
2016/09/01 - 2019/09/01 Practical works: Particle size characterisation for soils - 36 hours Engineer Degree (Master Level) - M2 École Centrale de Lyon, France
2016/09/01 - 2019/09/01 Practical works: Visual inspection and characterisation of soils - 32 hours Engineer Degree (Master Level) - M2 École Centrale de Lyon, France
2016/09/01 - 2019/09/01 Practical works: Beam theory and hyperstaticity + Elastic instabilities - 56 hours Engineer Degree (Master Level) - L3/M1 École Centrale de Lyon, France
2016/09/01 - 2018/09/01 Lecturer: Soil mechanics - 28 hours Engineer Degree (Master Level) - M1 École Centrale de Lyon, France

Journal scientific committee

Journal title (ISSN) Publisher
2021/05/01 - Current Buildings (ISSN 2075-5309) MDPI
2021/04/01 - Current Materials (ISSN 1996-1944) MDPI
2021/04/01 - Current Infrastructures (ISSN 2412-3811) MDPI
2021/03/01 - Current Applied Sciences (ISSN 2076-3417) MDPI
2021/02/01 - Current Invited reviewer in Fibers (ISSN 2079-6439) MDPI

Mentoring / Tutoring

Topic Student name
2020/01/01 - Current Energy generation through plants - Bataillou, Grégory
Distinctions

Award

2018 Student Competition of the IMC10 International Masonry Conference
Politecnico di Milano, Italy

Other distinction

2016 Congratulations of the Jury - Engineer's degree
École Centrale de Lyon, France
2016 National PhD Grant
Université de Lyon, France