Application of orthogonal-contour method in calibration of microscopic parameters of rockfill materials

WANG Jin-wei; CHI Shi-chun; SHAO Xiao-quan; ZHAO Fei-xiang

doi:10.11779/CJGE202010012

Volume 42 Issue 10

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Chinese Journal of Geotechnical Engineering > 2020 > 42(10): 1867-1875. > DOI: 10.11779/CJGE202010012

WANG Jin-wei, CHI Shi-chun, SHAO Xiao-quan, ZHAO Fei-xiang. Application of orthogonal-contour method in calibration of microscopic parameters of rockfill materials[J]. Chinese Journal of Geotechnical Engineering, 2020, 42(10): 1867-1875. DOI: 10.11779/CJGE202010012

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Application of orthogonal-contour method in calibration of microscopic parameters of rockfill materials

WANG Jin-wei^{1, 2,},
CHI Shi-chun^{1, 2, ,},
SHAO Xiao-quan^{1, 2},
ZHAO Fei-xiang^{1, 2}

1.
State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China
2.
Institute of Earthquake Engineering, Faculty of Infrastructure Engineering, Dalian University of Technology, Dalian 116024, China

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Received Date: September 23, 2019
Available Online: December 07, 2022

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Abstract

Abstract

In order to solve the problem of large amount of calculation in calibration of microscopic parameters for rockfill materials in discrete element model, taking the laboratory tri-axial tests on the rockfill materials as the object, the methods of orthogonal tests and contour lines are used to determine the microscopic parameters of the rockfill materials rapidly on the basis of narrowing the scope of microscopic parameters and analyzing the sensitivity of the macroscopic behaviors of the specimens to the microscopic parameters. The results show that the multiple orthogonal tests can quickly narrow the range of microscopic parameters. The advantages of the orthogonal test and contour method can be used to calibrate the microscopic parameters in discrete element model. This method also provides reference for other materials to calibrate microscopic parameters.
- microscopic parameter calibration,
- orthogonal test,
- contour line,
- rockfill material,
- particle flow

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References

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