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文章结合南水北调焦作1-Ⅱ标普济河倒虹吸工程施工过程,分析了大体积混凝土夏季施工产生裂缝的主要原因,夏季混凝土施工特性,采取一系列温控和防裂措施,保证了夏季大体积混凝土混凝土浇筑质量,并防止结构混凝土有害裂缝的出现。工程建成后通过5 a多的运行检验,至今未见裂缝,表明温控效果较好。
Based on the construction process of 1 - Ⅱ S & P River inverted siphon project in South - to - North Water Diversion Project, this paper analyzes the main causes of cracks in mass concrete construction in summer and the construction characteristics of concrete in summer, and adopts a series of temperature control and crack prevention measures to ensure large volume Concrete pouring quality, and to prevent the emergence of structural concrete harmful cracks. After the project is completed and passed the test of more than 5 years, no cracks have been found so far, indicating that the temperature control effect is better.