节理岩体的等效连续模型与工程应用  

An Equivalent Continuum Model for jointed Rocks and its Engineering Application

作　　者：朱维申[1] 王平[1] 

机构地区：[1]中科院武汉岩土力学研究所

出　　处：《岩土工程学报》1992年第2期1-11,共11页Chinese Journal of Geotechnical Engineering

基　　金：国家自然科学基金委的资助

摘　　要：本文将工程范围的规则节理岩体看作是由各向同性的岩石单元与等效各向异性的节理岩石单元构成的统一体,在深入分析节理岩石单元的变形与强度特性的基础上,详细推导了等效变形与等效强度的基本公式,提出了一种等效连续模型。通过非线性有限元数值分析,完成了节理岩体力学特性的模拟。利用前人的物理模型试验验证了该模型的有效性。上述数值模型运用于某一典型的工程节理岩体的强度预测,其结果是令人满意的。Jointed rocks with regular joint sets are treated as the unity of isotropic intact rock element and equivalent anisotropic rock element with joints. An equivalent continuum model is proposed and principal formulas of equivalent deformation and equivalent strength are obtained by carefully analyzing the deformation and strength character of rock element with joints. The character of jointed rocks is simulated by non-linear FEM analysis. The effectiveness of above model is verified by physical model tests. The proposed numerical model was used to predict the strength of jointed rocks in a typical engineering project with satisfactory results.

关 键 词：节理岩体 等效连续模型 岩体力学 

分 类 号：TU452[建筑科学—岩土工程]