Numerical Validation of Structural Constitutive Relationship of Loess with Moisture and Loading

LUO Ai-zhong; SHAO Sheng-jun; CHEN Chang-lu; FANG Juan

doi:10.11988/ckyyb.20140501

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Journal of Changjiang River Scientific Research Institute ›› 2016, Vol. 33 ›› Issue (2) : 74-79. DOI: 10.11988/ckyyb.20140501

ROCK-SOIL ENGINEERING

Numerical Validation of Structural Constitutive Relationship of Loess with Moisture and Loading

LUO Ai-zhong^1,2 , SHAO Sheng-jun² , CHEN Chang-lu^1,2 , FANG Juan^1,2

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Abstract

In this paper we propose a structural constitutive model of loess with moisture and loading. On this basis, we analyse the stress-strain relationship of structural loess by comparing the numerical simulation result with measured result of natural loess. Results show that the model has the same features with Modified Cambridge model in describing saturated remodeled loess. The model could also simulate the macro-mechanics properties of remodeling loess with different water contents. Moreover, it is obviously superior to Cambridge model or Modified Cambridge model in describing the macro-mechanical properties of natural structural loess in laboratory. Finally we validate the rationality and accuracy of the model by comparing model results with conventional triaxial test results.

Key words

loess / structural / moisture and loading / mechanical characteristics / constitutive model / experimental verification

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LUO Ai-zhong , SHAO Sheng-jun , CHEN Chang-lu , FANG Juan. Numerical Validation of Structural Constitutive Relationship of Loess with Moisture and Loading[J]. Journal of Changjiang River Scientific Research Institute. 2016, 33(2): 74-79 https://doi.org/10.11988/ckyyb.20140501

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