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You Ming-qing (2007)
DISCUSSION ON “NONLINEAR VISCOELASTO-PLASTIC RHEOLOGICAL MODEL (HOHAI MODEL) OF ROCK AND ITS ENGINEERING A PPLICATION”Chinese journal of rock mechanics and engineering
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Wang Wen-xing (2003)
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Zhang Qiangyong, Chen Fang, Yang Wendong, Li Wen-gang, Wang Jianhong, He Ru-ping, Zeng Jiquan (2011)
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K. Valanis (1970)
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Zhou Chuangbing (2012)
3D CREEP CONSTITUTIVE EQUATION OF MODIFIED NISHIHARA MODEL AND ITS PARAMETERS IDENTIFICATIONChinese journal of rock mechanics and engineering
Chu Weijiang (2006)
NONLINEAR VISCOELASTO-PLASTIC RHEOLOGICAL MODEL (HOHAI MODEL) OF ROCK AND ITS ENGINEERING APPLICATIONChinese journal of rock mechanics and engineering
Run Luo (2008)
Non-linear rheological damage model of rockChinese Journal of Geotechnical Engineering
The creep behavior of rock mass, including structural plane creep and rock creep, is different from that of intact rock. It is generally recognized that the characteristics of structural planes play a crucial role in such creep behavior. However, currently there are few comprehensive systematic studies on the rheological properties of structural planes, including experimental and theoretical aspects. In this paper, marble with green schist’s weak structural planes from the Jinping secondary hydropower station were selected as samples, and multi-stage loading shear creep tests were carried out in order to analyze the shear creep characteristics of such structural planes under different normal stress conditions. The test results showed that the shear creep process of structural planes can be divided into three stages, namely the attenuation stage, the constant stage, and the accelerated creep stage. Furthermore, the degree of structural plane development and normal stress level have a great influence on the creep behavior of rock mass. Moreover, based on the testing results, we established a nonlinear viscoelastic-plastic shear creep model by adding a new rheological element to the classic Nishihara model. In addition, the comparison between the test data and the fitting curve showed that this new model could describe the viscoelastic and viscoplastic deformation of weak structural planes more accurately.
Mechanics of Time-Dependent Materials – Springer Journals
Published: Sep 1, 2021
Keywords: Shear creep; Structural plane; Accelerating creep; Creep model
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