弧底梯形和U形刚柔混合衬砌渠道冻胀有限元分析  

Finite Element Analysis of Rigid Mixed Lining Channels' Frost Heaving of the Shape of Arc Bottom Trapezoidal and U

作　　者：董江伟[1] 姜海波[1,2] 汤骅[2] 唐凯[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832000

出　　处：《中国农村水利水电》2015年第11期164-168,177,共6页China Rural Water and Hydropower

基　　金：国家自然科学基金项目(51269029);石河子大学高层次人才科研启动基金项目(RCZX201128)

摘　　要：近年来刚柔混合衬砌渠道发展迅速,目前在南水北调、引额济克、季节性冻土区的灌区输水渠道工程中广泛应用。国内一些学者对混凝土衬砌渠道冻胀数值模拟做了研究,但关于刚柔混合衬砌渠道冻胀破坏的有限元分析未见报道。针对弧底梯形和U形刚柔混合衬砌渠道,应用ANSYS软件,对其冻胀过程进行模拟分析。采用间接耦合方式,首先进行热分析,得到渠道温度场,再转换单元类型为结构场,施加热分析得到的温度应力进行结构分析,计算渠道变形场和应力场,进而分析渠道冻胀受力情况及变形规律,对进一步推广应用大中型弧底梯形和U形刚柔混合衬砌渠道具有重要的意义。In recently years, the rigid mixed lining channels develop rapidly, now they are widely used in irrigation areas of water channel engineering in the South-to-North Water Diversion Project, water diversion from Elgin Francis River to Karamay and seasonal frozen soil areas. Some domestic scholars do research on the numerical simulation of frost heaving of concrete lining channels, but the finite element analysis of rigid mixed lining channels＇ frost heaving damage of large section has not been reported. According to the amount of the large section of rigid mixed lining channels of the shape of arc bottom trapezoidal and U, the ANSYS software is used to simulate and analyze thermal stress in heave. The indirect coupling method is used to firstly carry on the thermal analysis and get the temperature field of channel then to convert unit type to structure, thermal analysis is applied to get temperature stress and then analyze the structure, calculate the channel deformation field and stress field, then analyze frost heaving force and the deformation regularity, which will be of significance for promoting further the application of large and medium-sized trapezoidal of rigid mixed lining channels of frozen soil areas.

关 键 词：弧底梯形和U形 刚柔混合衬砌渠道 冻胀破坏 有限元分析 

分 类 号：TV3[水利工程—水工结构工程]