基于Mohr-Coulomb准则深埋球形洞室的弹塑性分析  

An Elastoplastie Analysis of Deeply Covered-up Spheroid Hole Room Based on Mohr-Coulomb Criterion

作　　者：张浪[1] 刘东升[1] 刘山文[1] 杨凯[1] 

机构地区：[1]后勤工程学院军事建筑工程系,重庆400041

出　　处：《后勤工程学院学报》2007年第4期64-67,共4页Journal of Logistical Engineering University

摘　　要：基于岩体力学中关于深埋圆形洞室的假设和Mohr—Coulomb准则，推导了深埋球形洞室开挖后应力弹性分布、塑性分布和塑性区半径的公式。并用所得到的公式与圆形洞室进行了比较。算例表明，在相同荷载、岩体强度参数和几何尺寸的前提下，球形洞室的受力比圆形洞室合理。Based on the hypotheses about deeply covered up rotundity hole room in rock mechanics and Mohr-Coulomb criterion, an analytical expression about the stress distribution of flexible area, plastic area and the plastic zone radius of deeply covered-up spheroid hole room are given. The comparison is carried on with the deeply covered-up rotundity hole room by use of the solution. Conclusions of discussion show that when the load, geometry dimension and strength parameters of rock mass are equal, the stress distribution about deeply covered-up spheroid hole room is more reasonable than that of deeply covered-up rotundity hole room.

关 键 词：Mohr—Coulomb强度理论 球形洞室 弹塑性分析 

分 类 号：TU91[建筑科学—建筑理论]