格八混凝土拱坝温度场仿真分析  

Simulation Analysis on Temperature Field of Geba Concrete Arch Dam

作　　者：陈海霞[1] 何蕴龙[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,湖北武汉430072

出　　处：《水电能源科学》2009年第4期108-110,共3页Water Resources and Power

基　　金：国家自然科学基金资助项目(50779020)

摘　　要：针对格八混凝土拱坝老坝加固工程,结合温度场的参数敏感性、混凝土绝热温升随龄期变化、分层浇筑等因素的影响,采用有限元法对温度场进行仿真分析,通过典型高程点的温度时程曲线及对拱坝上下游表面温度等值线图和最高温度包络图得出了新坝体温度场的分布和变化规律,为该拱坝及类似大坝进行温度应力和抗裂危险性分析奠定了基础。The temperature field of Geba old dam reinforcement project is analyzed by considering the process of pouring and using the FEM Method. In the process of analysis, the impact of parameter sensitivity of temperature field, change of adiabatic temperature with age of concret,eoncret placing by layer are combined. Through the elevation points of a typical time-temperature curve,as well as upstream and downstream of the dam surface temperature contour maps and maximum temperature envelope maps, the law of temperature distribution is obtained. Then it lays the foundation for analysis of temperature stress and crack in this concrete arc dam and some similar dams.

关 键 词：老坝加固工程 混凝土拱坝 热学参数 温度场 仿真分析 

分 类 号：TV642.4[水利工程—水利水电工程] TV315