The influence of anisotropy on compaction bands: The case of coaxiality between stress and fabric anisotropy tensors

International Journal for Numerical and Analytical Methods in Geomechanics ◽

10.1002/nag.3291 ◽

2021 ◽

Author(s):

Chara Prassa ◽

Sotiris Alevizos ◽

Manolis Veveakis ◽

Yannis F. Dafalias

Keyword(s):

Fabric Anisotropy ◽

Compaction Bands

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Noncoaxiality between Two Tensors with Application to Stress Rate Decomposition and Fabric Anisotropy Variable

Journal of Engineering Mechanics ◽

10.1061/(asce)em.1943-7889.0001730 ◽

2020 ◽

Vol 146 (3) ◽

pp. 04020004

Author(s):

X. S. Li ◽

Y. F. Dafalias

Keyword(s):

Stress Rate ◽

Fabric Anisotropy

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CHARACTERIZATION OF LIQUEFACTION RESISTANCE OF SAND: EFFECT OF INITIAL FABRIC

Journal of Earthquake and Tsunami ◽

10.1142/s1793431114500018 ◽

2014 ◽

Vol 08 (01) ◽

pp. 1450001 ◽

Cited By ~ 1

Author(s):

BO LI ◽

XIANGWU ZENG ◽

HAO YU

Keyword(s):

Depositional Environment ◽

Design Method ◽

Free Field ◽

Recent Experience ◽

Permeability Test ◽

Fabric Anisotropy ◽

Liquefaction Resistance ◽

Liquefaction Potential ◽

Centrifuge Tests

The micro-fabric of deposition reflects the imprints of its geologic and stress history, its depositional environment, and its weathering history. Recent experience shows that the fabric anisotropy does influence the static and dynamic behavior of granular materials. In this study, a series of centrifuge tests are conducted to investigate the effects of fabric anisotropy on the dynamic response in the free field. The results show the acceleration, pore pressure, and residual settlement is significantly affected by the fabric anisotropy of the ground, which shows the liquefaction resistance of the ground. Meanwhile, the response of acceleration is analyzed in frequency domain, which shows that the model prepared by 90° absorbs more energy than that of 0°. To verify the effects induced by the initial fabric, permeability test are conducted and related to the liquefaction potential. The results indicate the fabric anisotropy should be incorporated into the design method.

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