A Macroelement Approach for the Stability Assessment of Trees

G. Dattola, Matteo Ciantia (Lead / Corresponding author), A. Galli, L. Blyth, Xingyu Zhang, Jonathan Knappett, Riccardo Castellanza, C. Sala, Anthony Leung

Research output: Chapter in Book/Report/Conference proceedingChapter (peer-reviewed)

1 Citation (Scopus)
35 Downloads (Pure)

Abstract

Interaction diagrams in the generalized 3D loading space of vertical (V), horizontal (H) and moment (M) actions constitute the basis of the design of foundation structures in case of complex loads combinations. The mechanical response of such systems is frequently interpreted in terms of the ‘macroelement’ theory, where a generalized incremental constitutive relationship is introduced, linking the displacements and rotations of the foundation (playing the role of generalized strains) to the histories of applied loading components (i.e. the generalized stresses). In this paper an attempt to extend a classical macroelement framework, to the case of root-soil interaction presented. The model is calibrated on small scale experimental data on 3D printed plastic root systems, subject to combined V-H-M loads, and a parametric analysis on the main governing parameters is discussed. The comparison between numerical and experimental data suggests that the macroelement approach could be an efficient and simple analytical tool for describing the whole moment-rotation curve, overcoming the main simplifying hypotheses currently employed in arboriculture practice.
Original languageEnglish
Title of host publicationGeotechnical Research for Land Protection and Development
Subtitle of host publicationProceedings of CNRIG 2019
EditorsFrancesco Calvetti, Federica Cotecchia, Andrea Galli, Cristina Jommi
Place of PublicationSwitzerland
PublisherSpringer
Pages417-426
Number of pages10
Volume40
ISBN (Electronic)9783030213596
ISBN (Print)9783030213596, 9783030213589
DOIs
Publication statusPublished - 1 Jan 2020
EventCNRIG 2019: Geotechnical Research for Land Protection and Development - Lecco, Italy
Duration: 3 Jul 20195 Jul 2019

Publication series

NameLecture Notes in Civil Engineering
PublisherSpringer
Volume40
ISSN (Print)2366-2557
ISSN (Electronic)2366-2565

Conference

ConferenceCNRIG 2019
CountryItaly
CityLecco
Period3/07/195/07/19

Keywords

  • Bearing capacity
  • Macroelement
  • Roots
  • Soil-structure interaction
  • Trees

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