高混凝土面板坝面板应力分析现状  

Stress analysis of faceplate of high concrete faced rockfill dam

作　　者：肖化文[1] 陈传慧[1] 

机构地区：[1]长江水利委员会设计院,湖北武汉430010

出　　处：《人民长江》2002年第5期11-13,共3页Yangtze River

摘　　要：结合水布垭混凝土面板坝应力变形计算 ,对当前混凝土面板应力分析的现状进行了阐述。指出了存在的问题与不足 ,即如何模拟大坝的施工与蓄水过程 ,如何反映堆石体及接缝的应力变形特性 ,如何考虑混凝土面板与垫层之间的相互作用 ,都会影响到面板应力的计算结果 ;对几何边界条件的处理、单元网格的划分也会对面板的计算应力产生一定的影响。指出 :要使计算的面板应力与实际应力相符 ,必须在已有工作的基础上加大室内试验力度 ,对堆石体流变特性、面板与垫层的相互作用。Through stress and deformation computation of the concrete faced rockfill dam of Shuibuya hydroproject,the present situation of stress analysis on concrete slab is described and the existing problems and insufficiency in analysis are pointed out:such as,how to simulate the process of dam construction and water impoundment,how to reflect the stress-deformation features of rockfill body and joint face,how to consider the interaction between concrete slab and bedding layer.All these factors will affect stress computation results of slab.The simulation of geometric boundary condition and the division of computation mesh also affect the computation result of the slab stress to some extent.It is pointed out that in order to conform the computed stress results with practical condition,it is necessary to strengthen laboratory experiment on the base of existing achievements,thoroughly and deeply research on the rheologic behavior of rockfill body,interaction between face slab and bedding layer and stress-deformation behavior of joint face.

关 键 词：混凝土面板堆石坝 面板应力 堆石体 本构模型 接缝模拟 网络划分 

分 类 号：TV641.43[水利工程—水利水电工程]