我国水电站混凝土建筑物耐久性分析

Analysis on durability of concrete structure of hydropower stations in China

我国大、中型水电站混凝土建筑物受到裂缝、碳化、冻融冻胀、渗漏和溶蚀、冲磨和空蚀、水质侵蚀等比较严重的危害 ,耐久性较差 ,有的已危及到工程的稳定安全 ,需投入巨额资金进行修复或加固。目前应全面开展耐久性问题的检查评价和分析研究工作 ,对遭到严重危害的工程及时加以处理 ,保证工程的安全 ;同时应反馈设计、施工、运行全过程的经验和教训 ,指导工程的建设和管理 。

The concrete structures of large and medium sized hydropower stations in China were jeopardized by crack, carbonization, freeze, thaw and frost heave, seepage and dissolution, erosion and cavitation, so their durability are poor. Somewhat the stability and safety of the structures were endangered. It should be to input substantive fund to repair and strengthen them. It is the time to perform roundly inspection, evaluation and study on durability of concrete structures. It is the time to take remedial measures for the damaged structures in order to guarantee dam safety. At the same time it should give the learn and experience from the feedback of full process of design, construction and operation, then to guide project construction and management and to enhance the durability of concrete structure of hydropower stations.