非均质多圈管冻结壁三场耦合数值模拟研究  

The Numerical Simulation Study on the Three Filed Coupling of Multi-freezing Wall

作　　者：王新彪[1] 白蓉[1] 姚传勤[1] 

机构地区：[1]安徽理工大学土木建筑学院,安徽淮南232001

出　　处：《四川建材》2014年第3期79-82,共4页Sichuan Building Materials

摘　　要：本文主要应用冻土耦合基本理论以及考虑冻土的流变性和非均质性,采用ADINA非线性有限元软件,根据模型试验的条件建立数值计算模型并设立计算边界条件,分析了非均质冻结壁冻结温度场、水分场和冻结应力场的发展特性,结果表明:①各圈管不同位置冻结主面温度呈现不同的分布形式;②温度梯度是影响水分迁移的主要因素;③冻土的冻结应力在冻结管处最大,在冻结管的两侧呈抛物线形状衰减趋势。According to the basic theory of coupling effect and considering the rheology and heterogeneity of frozen soil, the paper which used ADINA nonlinear finite element software to set up numerical calculation model and the boundary conditions has analyzed the development characteristics of temperature field、moisture field and freezing stress field in Non - homogeneous freeze wall, the results show that： ①The freezing temperature of main plane in different place of the couple has different distribution forms; ② temperature gradient is the main factors to affect moisture migration; ③ the freezing stress in the frozen pipes is the biggest and on both sides of freeze pipes the freezing stress show attenuation trend with a parabolic shape.

关 键 词：多圈管冻结 数值模拟 温度场 应力场 水分场 

分 类 号：TD822[矿业工程—煤矿开采]