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中文摘要：
提出在岩体动态损伤本构模型中应同时考虑宏、细观缺陷;基于能量原理和断裂力学理论推导得出了同时考虑节理几何及力学特征的宏观损伤变量（张量）的计算公式;基于综合考虑宏、细观缺陷的复合损伤变量（张量）及完整岩石动态损伤Taylor-Chen-Kuszmaul（TCK）模型,建立了相应的单轴压缩下节理岩体动态损伤本构模型;利用该模型讨论了节理内摩擦角及节理长度对岩体动态力学特性的影响规律。研究表明,试件动态峰值强度随着节理内摩擦角的增大而增大,随着节理长度的增加而减小。
英文摘要：
This paper proposes that both macroscopic and mesoscopic flaws should be considered in the dynamic damage constitutive model for the jointed rock mass. Firstly, the calculation formula of the macroscopic damage variable （tensor） of the jointed rock mass is deduced based on the energy princi- ple and the fracture mechanics theory so that the geometrical and mechanical parameters can be con- sidered at the same time. Secondly, the compound damage variable （tensor） including both macro- scopic and mesoscopic flaws and the Taylor-Chen-Kuszmaul model （TCK） for the intact rock are a- dopted to establish the corresponding dynamic damage constitutive model for the jointed rock mass under uniaxial compression. Finally, the effect law of the joint internal friction angle and the joint length on rock mass＇s dynamic mechanical property is examined with this model. The results show that the dynamic climax strength of the samples increases and decreases respectively with the increase of the joint internal friction and the joint length.
同期刊论文项目
同项目期刊论文
A compressive damage constitutive model for rock mass with a set of non-persistently closed joints u
A Damage Constitutive Model for Rock Mass with Non-persistently Closed Joints under Uniaxial Compres
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