槽身结构在短时变化作用下的温度场研究  

Research on Temperature Field of Flume Structure under the Circumstance of Short-term Changes

作　　者：夏富洲[1] 冯晓波[1] 王长德[1] 

机构地区：[1]武汉大学水资源与水电工程科学国家重点实验室,武汉430072

出　　处：《中国农村水利水电》2009年第9期96-98,100,共4页China Rural Water and Hydropower

基　　金：国家自然科学基金"大型渡槽在短时变化作用下的温度场和温度应力研究"(50679060)

摘　　要：通过对大型渡槽的温度边界条件进行分析计算,确定了影响渡槽温度边界条件的主要影响因素及其变化规律。对温度场计算中的材料热参数进行了分析讨论,提出了参数值的确定方法。以南水北调中线某大型渡槽工程为研究对象,建立了矩形槽身结构沿壁厚、墙高、槽宽等方向的温度梯度模式。研究成果正在南水北调中线大型渡槽工程设计中应用。Main factors and variation laws of temperature boundary conditions of large-scale aqueducts are determined by analyzing and calculating the temperature boundary conditions. The determination methods of heat parameters of materials are also given. By calculating the temperature fields of some large-scale aqueducts in the Middle Route of the South-to-North Water Transfer Project, the temperature-gradient models of rectangular flume are established in the direction of thickness, height and width. The results are being applied in the Middle Route of the South-to-North Water Transfer Project.

关 键 词：大型渡槽 短时变化 温度边界条件 温度梯度模式 

分 类 号：TV672.3[水利工程—水利水电工程]