热-水-力共同作用下圆形洞室弹塑性解析解  

An elastoplastic analytical solution for circular cavern considering combined thermo-hydro-mechanical action

作　　者：张玉军[1] 张维庆 

机构地区：[1]中国科学院武汉岩土力学研究所岩土力学与工程国家重点实验室,武汉430071 [2]中铁隧道勘测设计院有限公司,天津300133

出　　处：《岩土力学》2013年第S2期41-44,共4页Rock and Soil Mechanics

基　　金：国家重点基础研究发展计划(973)项目资助(No.2010CB732101);国家自然科学基金资助(No.51079145)

摘　　要：基于已有的工作和Mohr-Coulomb屈服准则,建立了热-水-力三场共同作用下的圆形洞室弹塑性解析解,并分别在单力场、热-力场、水-力场、热-水-力场以及改变介质强度参数的条件下计算和比较了围岩中的应力分布、变化及塑性区范围。结果显示,温度场使得塑性区半径有所减小,但总的来看温度作用不明显;与仅有力作用时相比,孔隙水压力使得塑性区半径、径向应力和切向应力有较大幅度增长。On the basis of the existing work and Mohr-Coulomb yield criterion, an elasto-plastic analysis solution for circular underground cavern is established considering the combined thermo-hydro-mechanical action. Under the conditions of single stress field, thermo-mechanical field, hydro-mechanical field and thermo-hydro-mechanical field and changing strength parmeters of a medium, the distribution and change of stresses and plastic zones in the surrounding rock mass are computed and compared respectively. The results show that the temperature field makes the radius of plastic zone some decrease, but the action of temperature is not obvious on the whole;compared with the action of the single stress field, the pore water pressure makes the plastic zones ,radial stresses and tangential stresses increase greatly.

关 键 词：热-水-力共同作用 圆形洞室 弹塑性 解析解 

分 类 号：TU45[建筑科学—岩土工程]