正交各向异性岩体中地下洞室稳定的粘弹-粘塑性三维有限元分析  

3D viscoelastic-viscoplastic FEM analysis for stability of underground opening in orthotropic rockmass

作　　者：张玉军[1] 刘谊平[2] 

机构地区：[1]中国科学院武汉岩土力学研究所岩土力学重点实验室,湖北武汉430071 [2]中国科学院武汉物理与数学研究所,湖北武汉430071

出　　处：《岩土力学》2002年第3期278-283,共6页Rock and Soil Mechanics

基　　金：国家自然科学基金资助项目(59879027)

摘　　要：建立了一种正交各向异性岩体的粘弹-粘塑性模型,推导和描述了相应的数值计算表达式和有限元分析的步骤,并使用所编制的三维有限元程序,以在层状岩体(横观各向同性介质)中的地下洞室开挖为算例,考察了围岩的流变动态,得出了几点结论。A kind of viscoelastic-viscoplastic model for orthotropic rockmass is established; and the relevant numerical calculation expressions and the finite element analysis procedures are derived and described respectively. Taking an underground opening in a layered rockmass (transversely isotropic medium) as a computation example, the three-dimensional finite element analysis code developed by the authors is used to investigate the rheological state of the surrounding rockmass; and some conclusions are given.

关 键 词：正交各向异性岩体 粘弹-粘塑性模型 三维有限元法 稳定分析 

分 类 号：TU45[建筑科学—岩土工程]