基于ABAQUS的刚柔混合衬砌渠道接触特性分析  

Analysis of Contact Characteristics of the Rigid Mixed Lining Channels Based on ABAQUS

作　　者：张存[1] 董江伟[1] 汤骅[2] 姜海波[2] 

机构地区：[1]西藏农牧学院,西藏林芝860000 [2]石河子大学水利建筑工程学院,新疆石河子832003

出　　处：《人民黄河》2017年第5期144-148,共5页Yellow River

基　　金：国家自然科学基金资助项目(51269029);西藏大学农牧学院高层次人才科研启动费项目(RC201502)

摘　　要：在室内试验的基础之上,基于弹塑性力学基本理论、应变软化基本理论、邓肯-张基本理论,采用有限元分析软件ABAQUS对刚柔混合衬砌渠道接触特性进行数值模拟,得出了复合土工膜与渠基土壤结构接触面剪切变形和位移的分布规律。计算结果表明:最大位移和应力变形发生在渠道坡板与底板交界处,说明在交界处产生应力集中现象,应力值随渠道断面高程增加而减小,自重效应明显。其所承受应力及量级和变形分布规律在合理范围内,渠道结构达到了安全要求,计算成果可信,可为分析和评价刚柔混合衬砌渠道边坡稳定性提供依据。On the basis of indoor test and the theory of elastic-plastic mechanics,strain softening theory and Duncan-Chang theory,this pa-per used the finite element analysis software ABAQUS to simulate the mixed rigid lining channels’ contact characteristics. It obtained the dis-tribution of shear defor^mation and displacement of composite geomembrane and canal base soil structure interface. The results show that the maximum displacement and stress deformation occur in the channel slope plate and the bottom plate at the junction, which indicates the junc-tion position produces the phenomenon of stress concentration ; the stress value decreases with the channel height increasing ; the weight effect is obvious. The channel stress and deformation distribution and magnitude are reasonable; the channel structure has reached the safety re-quirements. The calculation results are credible,which could provide a basis for the analysis and evaluation of slope stability of the rigid mixed lining channels.

关 键 词：刚柔混合衬砌渠道 接触面 接触特性 有限元分析 

分 类 号：TV131[水利工程—水力学及河流动力学]