基于中主应力强度准则岩石损伤本构模型研究
Study on the Constitutive Model of Rock Damage Based on Intermediate Principal Stress Criterion
作者: 刘斯奇 * , 郑永来 , 邓树新 :同济大学土木工程学院,上海;
关键词: 岩石破裂; 损伤; 中主应力; 本构模型; Rock Failure; Damage; Intermediate Principal Stress; Constitutive Model
摘要:Abstract: By discussing the form of new rock micro-unit strength based on intermediate principal stress criterion, which satisfies Weibull random distribution, and introducing a damage correction factor q, a statistical constitutive model of rock damage was developed based on the stress-strain curve of tri-axial tests for rocks. Moreover, the effect of the parameters of Weibull distribution and the damage correction factor on the model was studied. The model was rectified according to the properties of tri-axial stress-strain test curve of rock. Compared with the existing research results, this model can better simulate the rock strain softening under low confining pressure. Therefore, this model has broad prospects for application.
文章引用: 刘斯奇 , 郑永来 , 邓树新 (2016) 基于中主应力强度准则岩石损伤本构模型研究。 土木工程, 5, 171-180. doi: 10.12677/HJCE.2016.55023
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