南水北调中线工程泲河渡槽三维有限元分析  

Three-Dimensional FEM Analysis on Jihe River Aqueduct in the Middle Route of South-to-North Water Diversion Project

作　　者：郑重阳[1] 彭辉[1] 任德记[1] 

机构地区：[1]三峡大学水利与环境学院,湖北宜昌443002

出　　处：《长江科学院院报》2013年第5期86-91,共6页Journal of Changjiang River Scientific Research Institute

基　　金：国家自然科学基金资助项目(50909054);三峡大学研究生科研创新基金资助项目(2011CX005)

摘　　要：南水北调大型渡槽流量大、跨度大等特点,对渡槽的设计提出了更高的要求。结合南水北调泲河渡槽的工程实例,运用三维有限单元法对该渡槽的受力性能进行模拟,同时重点考虑预应力和温度荷载的影响,研究了渡槽槽身各部位控制断面的应力、变形分布规律。计算结果表明:槽身截面设计和预应力筋布置方案合理,应力和位移均在允许范围内,满足抗裂和挠度要求。Large flow and long span of the large-scale aqueduct in South-to-North Water Diversion Project pose high-er requirements for the aqueduct design. Taking the Jibe River Aqueduct for example, the structural behavior of the aqueduct was simulated by using 3-D FEM method. In consideration of pre-stress and temperature load, the distri-bution of stress and deformation in different control sections of the aqueduct body was analyzed. Result indicates that the design of the aqueduct body section and the scheme of pre-stressed reinforcement are reasonable. Stress and displacement are within the allowable range and both meet the requirements of anti-crack and deflection.

关 键 词：南水北调 大型渡槽 预应力配筋 有限元法 热-应力耦合 

分 类 号：TV672.3[水利工程—水利水电工程]