碾压混凝土重力坝人工短缝效果研究  

Study on Effects of Artificial Short Cracks of Roller Compacted Concrete Gravity Dam(RCCD)

作　　者：黄玮[1] 谭力[2] 黄达海[2] 

机构地区：[1]三峡大学土木水电学院,湖北宜昌443002 [2]北京航空航天大学土木系,北京100083

出　　处：《云南水力发电》2007年第3期52-56,共5页Yunnan Water Power

摘　　要：文章介绍碾压混凝土重力坝设置人工短缝,对坝体上下面不同部位的左右岸方向温度应力的影响研究成果。切缝方式为:从坝的上游面顺水流方向切缝4.5 m,下游面切缝3 m,缝在大坝的高程方向是贯通的。计算时考虑的工况为运行期蓄水与施工期不蓄水两种方案,计算了切缝与不切缝的不同部位的温度应力,其成果可为切缝设计提供理论依据。This paper makes a special study of effects of thermal - stress in different parts of artificial cracks in RCCD. Crack cutting is so arranged that a 4.5m long crack is cut current - wise from the upstream face of the dam and a 3.5m long crack from the downstream face. The cracks are linked up in the direction of dam height. The thermal- stress has been calculated for different parts with cracks and without cracks under the condition of impounding during operation period and non- impounding during construction period respectively. The calculation results provide theoretical basis for designing of crack - cutting.

关 键 词：碾压混凝土 人工短缝 仿真计算 应力释放 

分 类 号：TV642.2[水利工程—水利水电工程]