TY - GEN
T1 - The Influence of Microscopic Parameters on Deformation Properties of Rockfıll Materials
AU - Ma, C.
AU - Zenz, G.
AU - Staudacher, E. J.
AU - Yang, J.
N1 - Funding Information:
Acknowledgements This research was supported by the Key projects of natural science basic research program of Shaanxi province (Grant No. 2018JZ5010), science and technology projects of the state grid Xinyuan company LTD. (Grant No. SGXYZA00GCJS1900034) and the Water Science Plan Project of Shaanxi Province (Grant No. 2018SLKJ-5). The authors are grateful to Shao Lei for the data.
Funding Information:
This research was supported by the Key projects of natural science basic research program of Shaanxi province (Grant No. 2018JZ5010), science and technology projects of the state grid Xinyuan company LTD. (Grant No. SGXYZA00GCJS1900034) and the Water Science Plan Project of Shaanxi Province (Grant No. 2018SLKJ-5). The authors are grateful to Shao Lei for the data.
Publisher Copyright:
© 2021, The Editor(s) (if applicable) and The Author(s), under exclusive license to Springer Nature Switzerland AG.
PY - 2021
Y1 - 2021
N2 - 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.
AB - 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.
KW - Deformation properties
KW - Discrete element method
KW - Microscopic parameters
KW - Rockfill materials
KW - Triaxial test
UR - http://www.scopus.com/inward/record.url?scp=85096609016&partnerID=8YFLogxK
U2 - 10.1007/978-3-030-51085-5_46
DO - 10.1007/978-3-030-51085-5_46
M3 - Conference paper
AN - SCOPUS:85096609016
SN - 9783030510848
T3 - Lecture Notes in Civil Engineering
SP - 821
EP - 832
BT - Numerical Analysis of Dams - Proceedings of the 15th ICOLD International Benchmark Workshop, ICOLD-BW 2019
A2 - Bolzon, Gabriella
A2 - Sterpi, Donatella
A2 - Mazzà, Guido
A2 - Frigerio, Antonella
PB - Springer Science and Business Media Deutschland GmbH
T2 - 15th ICOLD International Benchmark Workshop on Numerical Analysis of Dams
Y2 - 9 September 2019 through 11 September 2019
ER -