锚固正交各向异性岩体的三维弹塑性有限元分析  

3D ELASTO-PLASTIC FEM ANALYSIS FOR BOLTED 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,武汉430071 [2]中国科学院武汉物理与数学研究所,武汉430071

出　　处：《岩石力学与工程学报》2002年第8期1115-1119,共5页Chinese Journal of Rock Mechanics and Engineering

基　　金：国家自然科学基金资助项目(59879027)。

摘　　要：首先从经过系统锚杆加固的正交各向异性岩体中取出表征单元,然后根据“等效材料”的概念和在一定的简化条件下,建立其本构方程和破坏准则,并将之引入三维弹塑性有限元程序中。以地下洞室开挖为算例来考察锚固前后围岩的力学动态,从而得出有益的认识和结论。At first, a representative element is established theoretically for the orthotropic rockmass supported by systematic rock bolts. Then according to the concept of equivalent material and under some simplified conditions, the constitutive expression and failure criterion for bolted rockmass are set up and introduced into 3D elasto-plastic FEM code. Through the calculation examples of an underground opening, the dynamic states of the surrounding rockmass with and without bolting are investigated, and some conclusions are given finally.

关 键 词：锚固岩体 正交各向异性 本构关系 三维有限元分析 地下洞室 围岩 

分 类 号：TD353.6[矿业工程—矿井建设] TD31