空心渡槽的温度应力研究  

Research on Thermal Stress of Cavity Aqueduct

作　　者：宋书卿[1] 王长德[1] 冯晓波[1] 郭华[1] 

机构地区：[1]武汉大学水利水电学院,武汉430072

出　　处：《中国农村水利水电》2005年第11期86-88,90,共4页China Rural Water and Hydropower

摘　　要：为了有效地降低温度应力对水工渡槽的结构破坏,提出了空心渡槽这一新型的渡槽结构形式。并用有限元分析软件ANSYS 7.0,分别计算了南水北调中线工程上某一大型渡槽其普通结构和空心结构2种形式的三维稳态温度场和温度应力,并比较了空心结构不同壁厚对温度应力的影响。计算结果表明,采用空心结构可以有效的降低渡槽的温度应力。A new type of aqueduct structure form, cavity aqueduct, is proposed in order to reduce hydraulic aqueduct structural damage from thermal stress in this paper. FEM software ANSYS 7.0 is applied in the calculation of the three-dimensional thermal fields and thermal stresses of a large-slzed aqueduct with ordinary structure and cavity structure in the South-to-North Water Transfer Project, and in the comparison of impacts of different wall thickness on thermal stress of the cavity aqueduct. The calculation results show that the structure form of cavity aqueduct can effectively reduce the thermal stress in the aqueduct.

关 键 词：空心渡槽 边界条件 温度场 温度应力 有限元分析 

分 类 号：TV672.3[水利工程—水利水电工程]