摘要
碾压混凝土(RCC)筑坝技术是混凝土筑坝技术在材料与施工技术上的革命,本文从RCC坝的现状入手,分析大坝产生裂缝和导致渗漏的原因,论证了尽可能降低重力坝坝体混凝土中的胶凝材料用量,就可避免温度裂缝的发生。提出的重力坝设计新思路是:坝体混凝土只满足应力与稳定的要求,无需承担防渗功能,而大坝的防渗功能,应由上游面专门设置的防渗结构来承担,即大坝的设计应体现功能分开的原则。
This paper starts with the present situation of RCC dams, analyzes the causes of cracking and seepage occurred in dams, and demonstrates that minimizing the cementing material consumption in concrete gravity dam may effectively control the cracks due to temperature. The new philosophy for gravity dams is as following:the dam body concrete should only satisfy the stress and stability requirements, the seepage control function should be performed by the impervious structure arranged at the upstream face of the dam. This means the principle of functional separation should be respected in dam design.
出处
《水利学报》
EI
CSCD
北大核心
2004年第2期62-67,共6页
Journal of Hydraulic Engineering
关键词
碾压混凝土坝
温度裂缝
防渗结构
功能分开
设计新思路
RCC dam
temperature crack
impervious structure
functional separation
new design philosophy
