三峡三期工程大坝混凝土优质快速施工新技术研究及实践

Research and practice on new technology of concrete rapid construction in Three Gorges project

在三峡工程二期大坝施工科学分析、快速施工技术和实践的基础上,三期大坝混凝土施工运用在非基础约束区浇筑3m层厚,超冷温度补偿接缝灌浆灌区混凝土龄期及右非2#坝段并缝通仓浇筑等施工新技术,三期大坝提前半年到达坝顶且没有出现裂缝。工程实践证明,其快速施工新技术是科学的,对相关工程施工有一定指导意义。

Based on the analyses and application of the rapid concrete construction technologies for the second stage, the third stage dam of Three Gorges project adopted a lift thickness 3m for the foundation non-restriction zone, dam temperature compensation for the joint of the grouting compartment of the concrete with short age, and the longitudinal joint-free concrete placing for the No. 2 right non-overflow dam field. The third stage dam was completed half a year ahead the schedule and no concrete crack appeared. The application proved that these new technologies of rapid construction are feasible and are valuable to the other projects.