Research on elastoplastic damage constitutive model of intact Q^sub 2^l loess in northwestern of China

Based on the unsaturated triaxial experiments for the intact fourth period Middle Pleistocene Epoch loess (Q^sub 2^l loess), the mechanical characteristic of Q^sub 2^l loess is studied. According to the continuum damage mechanics and elasticâ[euro]"plastic theory, the damage potential function...

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Bibliographic Details
Published inEnvironmental earth sciences Vol. 69; no. 1; p. 85
Main Authors Zhong, Zuliang, Liu, Xinrong, Liu, Yuanxue
Format Journal Article
LanguageEnglish
Published Heidelberg Springer Nature B.V 01.05.2013
Subjects
Deformation
Geological time
Loess
Mechanics
Pleistocene
Rock deformation
Soil sciences
China
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Summary:Based on the unsaturated triaxial experiments for the intact fourth period Middle Pleistocene Epoch loess (Q^sub 2^l loess), the mechanical characteristic of Q^sub 2^l loess is studied. According to the continuum damage mechanics and elasticâ[euro]"plastic theory, the damage potential function and loading function were deduced. Besides, plastic deformation and irreversible damage deformation are supposed to obey Hyushinâ[euro](TM)s postulate. The elastoplastic damage constitutive model and damage evolution law of the unsaturated intact Q^sub 2^ loess are set up. Comparing the experiment curves with the computation result of this model, it is shown that the model can stimulate the mechanics characteristics of Q^sub 2^ loess well.[PUBLICATION ABSTRACT]
ISSN:1866-6280
1866-6299
DOI:10.1007/s12665-012-1936-0