A Damage Constitutive Model for Rock Based on Weibull Distribution Under Coupling Action of Temperature and Confining Pressure

CHEN Youliang; XIAO Peng; DU Xi; WANG Suran; R. AZZAM

doi:10.13204/j.gyjzG21030203

Volume 52 Issue 8

Aug. 2022

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Chen Aoyi, Zhang Zhaoyi, Wang Hui, Yang Zhiyan, Zhang Jiaqi. CONSTRUCTION INDUSTRIALIZATION AND GREEN MODULE BUILDING[J]. INDUSTRIAL CONSTRUCTION, 2014, 44(06): 108-111. doi: 10.13204/j.gyjz201406024

Citation:

CHEN Youliang, XIAO Peng, DU Xi, WANG Suran, R. AZZAM. A Damage Constitutive Model for Rock Based on Weibull Distribution Under Coupling Action of Temperature and Confining Pressure[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(8): 160-167. doi: 10.13204/j.gyjzG21030203

Chen Aoyi, Zhang Zhaoyi, Wang Hui, Yang Zhiyan, Zhang Jiaqi. CONSTRUCTION INDUSTRIALIZATION AND GREEN MODULE BUILDING[J]. INDUSTRIAL CONSTRUCTION, 2014, 44(06): 108-111. doi: 10.13204/j.gyjz201406024

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A Damage Constitutive Model for Rock Based on Weibull Distribution Under Coupling Action of Temperature and Confining Pressure

doi: 10.13204/j.gyjzG21030203

CHEN Youliang^1,2,
XIAO Peng^{1
,
,},
DU Xi^1,3,
WANG Suran⁴,
R. AZZAM²

1. School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China;
2. Department of Engineering Geology and Hydrogeology, RWTH Aachen University, Aachen 52064, Germany;
3. School of Civil and Environmental Engineering, University of New South Wales, Sydney 2052, Australia;
4. Department of underground architecture and engineering, Tongji University, Shanghai 200093, China

Received Date: 2021-03-02
Available Online: 2022-12-01

Abstract

Abstract

Based on Lemaitre’s hypothesis theory of strain equivalence, it was assumed that the micro-element strength of rock subjected to thermal-mechanical coupling damage followed the Weibull distribution. Considering the influence of temperature and confining pressure coupling on rock mechanical parameters, the thermal-mechanical damage variables were introduced by the damage mechanic theory. In the condition that the microelement failure conformed to the D-P criterion, the damage evolution equation for coupling of temperature and mechanics and the constitutive model of rock were established. The required model parameters were derived by the theory. Comparing between the peak points in the established constitutire model curves for thermal-mechanical coupling demage and experimental curves, the results showed that the two curves were in good agreement, the model could well reflect the damage evolution and the constitutive relation for rock in the coupling of temperature and confining pressure. The rationality and reliability of the model and the method to determine the model parameters were verified. The model parameters required by the model could be obtained by conventional triaxial tests in laboratory.
- rock mechanics,
- damage mechanics,
- Weibull distribution,
- thermal-mechanical coupling,
- damage evolution,
- constitutive model

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References(19)

References

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