Multi-axis loading tests on a small-scale tree roots model

G. Marrazzo, M.O. Ciantia, T. Riccio, J.A. Knappett, A. Galli

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Abstract

Trees can be considered as “living structures”, subjected to a complex combination of vertical, horizontal and toppling loads, mainly deriving from tree self-weight and external actions (e.g. wind). From a geotechnical perspective, the root plate works as a shallow foundation, providing the tree anchoring resistance within the soil. This paper presents a small-scale 1g testing campaign aimed at investigating root plate-soil interaction by means of a new multi-axis loading frame. A 3D printed simplified root model embedded in a
medium dense sand is subjected to displacement controlled loading paths, combining vertical and toppling actions. The experimental data are then interpreted in the light of the well-known macroelement theory, and the discussion suggests that such method could be used to reproduce the system mechanical response for different loading directions. The bases of the definition of (i) the limit locus, (ii) the hardening rule and (iii) the plastic potential are also concisely presented.
Original languageEnglish
Title of host publicationProceedings of the 5th ECPMG 2024
Subtitle of host publication5th European Conference on Modelling in Geotechnics
EditorsMiguel Angel Cabrera, Suzanne J.M. van Eekelen, Adam Bezuijen
PublisherInternational Society for Soil Mechanics and Geotechnical Engineering
Number of pages6
DOIs
Publication statusPublished - Oct 2024
EventECPMG 2024: 5th European Conference on Physical Modelling in Geotechnics - Deltares, Delft, Netherlands
Duration: 2 Oct 20244 Oct 2024
Conference number: 5th
https://tc104-issmge.com/ecpmg-2024/

Conference

ConferenceECPMG 2024
Abbreviated titleECPMG 2024
Country/TerritoryNetherlands
CityDelft
Period2/10/244/10/24
Internet address

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