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.

Dattola, G., Ciantia, M., Galli, A., Blyth, L., Zhang, X., Knappet, J., et al. (2020). A Macroelement Approach for the Stability Assessment of Trees. In F. Calvetti, F. Cotecchia, A. Galli, C. Jommi (a cura di), Geotechnical Research for Land Protection and Development. Proceedings of CNRIG 2019 (pp. 417-426). Springer [10.1007/978-3-030-21359-6_44].

A Macroelement Approach for the Stability Assessment of Trees

Dattola, G
;
Ciantia, M;Castellanza, R;
2020

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.
Capitolo o saggio
Bearing capacity; Macroelement; Roots; Soil-structure interaction; Trees
English
Geotechnical Research for Land Protection and Development. Proceedings of CNRIG 2019
Calvetti, F.; Cotecchia, F; Galli, A; Jommi, C
2020
978-3-030-21358-9
40
Springer
417
426
Dattola, G., Ciantia, M., Galli, A., Blyth, L., Zhang, X., Knappet, J., et al. (2020). A Macroelement Approach for the Stability Assessment of Trees. In F. Calvetti, F. Cotecchia, A. Galli, C. Jommi (a cura di), Geotechnical Research for Land Protection and Development. Proceedings of CNRIG 2019 (pp. 417-426). Springer [10.1007/978-3-030-21359-6_44].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/397730
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