RCC重力坝防渗体温度场的三维有限元浮动网格法仿真分析  

Impervious Element Temperature Field Simulating Analysis Using Three-Dimensional Finite Element Relocating Mesh Method for RCC Dam

作　　者：解宏伟[1] 陈尧隆[1] 

机构地区：[1]西安理工大学水利水电学院

出　　处：《西安理工大学学报》2005年第1期19-23,共5页Journal of Xi'an University of Technology

基　　金：国家863西部行动项目资助(2003AA33X100)。

摘　　要：利用三维有限元浮动网格法,对采用不同厚度的常态混凝土、二级配碾压混凝土、变态混凝土防渗结构的碾压混凝土坝温度场进行了仿真计算。结果表明,不同形态的混凝土防渗结构对碾压混凝土坝体温度场的影响不大;而防渗体厚度对其自身温度的影响较大,防渗体厚度过大或过小,都对其温控不利;对三级配碾压混凝土坝采用二级配碾压混凝土中等厚度(D=3m)的防渗体已能满足温控要求。Three-dimensional finite element relocating mesh method is used to simulate the temperature distribution for different materials, including convention concrete(CC), grader-(enrich)-concrete(GEV) and second grader roller compacted concrete(SGRCC),and different thickness of impervious elements in the RCC dam during construction period in this paper. The calculating results show that the different types of impervious elements have no impact on the temperature distribution of dam; however, the thickness of impervious element has a great impact on the temperature distribution of dam, and conclusions can be drawn that the middle thickness of impervious element from 3 m to 5 m of SGRCC can satisfy the requirement of temperature control for third grader roller compacted concrete(TGRCC) dam.

关 键 词：碾压混凝土坝 浮动网格法 防渗结构 温度控制 

分 类 号：TV642.2[水利工程—水利水电工程]