高寒地区输变电线路基础冬期混凝土施工探讨

Discussion on concrete construction of transmission and transformation line foundation in alpine regions in winter

近年来,我国西部特别是藏区输变电工程建设发展迅速,高寒高海拔的恶劣气候对冬期混凝土强度、密实度与耐久度可能带来较大影响,如何有效避免冬期混凝土遭受高寒气温冻害,科学组织冬期混凝土施工是项目建设的重点。通过实践研究,总结归纳冬期混凝土施工控制要点,为类似工程提供参考借鉴。实践表明,做好混凝土入仓温度和保温养护能有效保证冬期混凝土施工质量。

In recent years,the construction of power transmission and transformation projects in western China,especially in Tibetan areas,has developed rapidly,and the harsh climate of high altitude and cold may have a great impact on the strength,compactness and durability of concrete in winter.How to effectively avoid freezing damage of concrete in winter caused by high temperature and cold,scientific organization of concrete construction in winter is the key point of the project construction.Through practical research,the key points of concrete construction control in winter are summarized,which can provide reference for similar projects.Practice shows that the concrete warehousing temperature and thermal insulation maintenance can effectively guarantee the quality of concrete construction in winter.