索风营水电站碾压混凝土坝温度控制设计  

Design Of Temperature Control for RCC Gravity Dam Of Suofengyin Hydropower Station

作　　者：吴正新[1] 郑治[1] 

机构地区：[1]中国水电贵阳勘测设计研究院,贵州贵阳550002

出　　处：《贵州水力发电》2005年第2期23-29,共7页Guizhou Water Power

摘　　要：索风营水电站大坝为碾压混凝土重力坝, 最大坝高115 8m。基于坝址河谷狭窄及基础约束强烈, 为防止坝体出现危害性裂缝, 设计采用有限元三维仿真模拟坝体分缝分层的施工过程对坝体温度应力场进行仿真计算, 从大坝结构设计、混凝土材料选择, 以及施工方法等方面, 加强温度控制。从目前已完成的基础约束区及坝体30万m3 混凝土(其中碾压混凝土18万m3 )浇筑质量来看, 裂缝极少, 且为表层裂缝, 质量良好。The dam of Sofengyin Hydropower Station is RCC gravity one with highest height of 115.8m The foundation constraint is very strong because the river valley at dam site is narrow.In order to prevent occurring impair crack on the dam body,the designer has strengthened temperature control in some key links such as structure design of the dam,selection of concrete materials,construction method etc..Using 3-d finite element method the designer also simulated constructing progress by layers and joints,as well as carried out simulating calculations to temperature field of the dam.According to the concrete completed at the foundation constraint area and in dam body,the crack are few,andonly on the surface,this makes known the quality of concrete constructing at the areas is quite well.

关 键 词：碾压混凝土坝 索风营水电站 控制设计 基础约束 水电站大坝 温度应力场 仿真计算 施工过程 仿真模拟 结构设计 材料选择 施工方法 温度控制 浇筑质量 表层裂缝 坝体 重力坝 危害性 有限元 坝高 河谷 坝址 

分 类 号：TV642.2[水利工程—水利水电工程] TV731.6