The Influence of Microscopic Parameters on Deformation Properties of Rockfıll Materials

C. Ma*, G. Zenz, E. J. Staudacher, J. Yang

*Korrespondierende/r Autor/-in für diese Arbeit

Publikation: Beitrag in Buch/Bericht/KonferenzbandBeitrag in einem KonferenzbandBegutachtung

Abstract

To analyze the influence of microscopic parameters on deformation properties of rockfill materials in triaxial test simulation with discrete element method (DEM), a control variable method was adopted to determine the influence on stress-strain and volumetric strain curves. In addition, the influence mechanism was explained. Firstly, the characteristics and development trend of triaxial test simulations of rockfill materials were summarized in detail, and it is determined that the contact bond model is the best choice for simulating triaxial tests of rockfill materials. Subsequently, a detailed DEM model of the triaxial test of rockfill materials was established to study the influences and mechanism of friction coefficient, normal and shear stiffness, normal and shear bond strength. Finally, the relationship between deformation properties and broken bond of rockfill materials was investigated. It is considered that the broken bonds of rockfill materials were obviously influenced by microscopic parameters, and the deformation properties were significantly affected by broken bonds. Therefore, in this paper, the influence of microscopic parameters on the deformation properties of rockfill materials was explored, providing a reference for the calibration of microscopic parameters and laying a foundation for the characteristics research of rockfill materials.

Originalspracheenglisch
TitelNumerical Analysis of Dams - Proceedings of the 15th ICOLD International Benchmark Workshop, ICOLD-BW 2019
Redakteure/-innenGabriella Bolzon, Donatella Sterpi, Guido Mazzà, Antonella Frigerio
Herausgeber (Verlag)Springer Science and Business Media Deutschland GmbH
Seiten821-832
Seitenumfang12
ISBN (Print)9783030510848
DOIs
PublikationsstatusVeröffentlicht - 2021
Veranstaltung15th ICOLD International Benchmark Workshop on Numerical Analysis of Dams, ICOLD-BW 2019 - Milan, Italien
Dauer: 9 Sep. 201911 Sep. 2019

Publikationsreihe

NameLecture Notes in Civil Engineering
Band91
ISSN (Print)2366-2557
ISSN (elektronisch)2366-2565

Konferenz

Konferenz15th ICOLD International Benchmark Workshop on Numerical Analysis of Dams, ICOLD-BW 2019
Land/GebietItalien
OrtMilan
Zeitraum9/09/1911/09/19

ASJC Scopus subject areas

  • Tief- und Ingenieurbau

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