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典型文献
Coupled thermo-mechanical constitutive damage model for sandstone
文献摘要:
Underground rock dynamic disasters are becoming more severe due to the increasing depth of human operations underground.Underground temperature and pressure conditions contribute significantly to these disasters.Therefore,it is important to understand the coupled thermo-mechanical(TM)behaviour of rocks for the long-term safety and maintenance of underground tunnelling and mining.Moreover,investigation of the damage,strength and failure characteristics of rocks under triaxial stress conditions is important to avoid underground rock disasters.In this study,based on Weibull distribution and Lemaitre's strain equivalent principle,a statistical coupled TM constitutive model for sandstone was established under high temperature and pressure conditions.The triaxial test results of sandstone under different temperature and pressure conditions were used to validate the model.The proposed model was in good agreement with the experimental results up to 600℃.The total TM damage was decreased with increasing temperature,while it was increased with increasing confining pressure.The model's pa-rameters can be calculated using conventional laboratory test results.
文献关键词:
作者姓名:
Savani Vidana Pathiranagei;Ivan Gratchev
作者机构:
School of Engineering and Built Environment,Gold Coast Campus,Griffith University,Southport,QLD 4222,Australia
引用格式:
[1]Savani Vidana Pathiranagei;Ivan Gratchev-.Coupled thermo-mechanical constitutive damage model for sandstone)[J].岩石力学与岩土工程学报(英文版),2022(06):1710-1721
A类:
B类:
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AB值:
0.544593
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