高坝碾压混凝土凹凸层缝法筑坝的设想  

The Idea About Making Dentate Lift Joint in the Construction of High RCC Dam

作　　者：黎思幸[1] 肖焕雄[2] 练继建[1] 

机构地区：[1]天津大学建筑工程学院,天津300072 [2]武汉大学水利水电学院,湖北武汉430072

出　　处：《水利水电技术》2002年第2期15-17,共3页Water Resources and Hydropower Engineering

摘　　要：高坝碾压混凝土的施工缝面很可能是抗滑稳定安全的控制因素,为改善碾压混凝土坝这一成层材料结构体的特性,提出在碾压混凝土振碾密实后再采用接地部位为凹凸齿形的振动施工机械将碾压混凝土的平直层面压制成如三角形、梯形、波浪形等齿型层面,从而在上下层之间形成凹凸层缝的设想.理论分析认为这一施工技术对提高碾压混凝土层缝的抗剪强度效果显著.To increase the shear strength on lift joints of the high roller compacted concrete dam(RCCD),a kind of construction method is brought forward.By the method,dentate lift joints such as the triangular,trapezia or wave type lift joints can be formed by using the vibra-tors with the dentate surface after the compacted density of RCC having reached the design demand.The analysis results show that dentate lift joints can produce higher shear strength than bedding plane.

关 键 词：碾压混凝土高坝 凹凸层缝 抗滑稳定 接地部位 平直层面压制 剪切 抗剪强度 

分 类 号：TV642.2[水利工程—水利水电工程]