南水北调中线京石段沙河(北)倒虹吸工程由于受工期制约,管身段的混凝土冬季施工是不可避免。本文结合倒虹吸的结构状况、工程建设的紧张程度、施工时的气温情况,从冬季混凝土施工准备、骨料的保温、拌合水的温控、混凝土运输过程的保温、仓面的保温及其它方面,阐述了冬季混凝土施工技术的应用,并进行探讨。 Middle Route of South-to-North Water Diversion Project Shahe (North) Inverted Siphon Project of Jingshi Section of Beijing-Shijiazhuang Section As a result of the construction period constraints, concrete winter construction of the tube body section is inevitable. In this paper, the structure of inverted siphon, the degree of construction tension, the temperature during construction, from the construction of concrete in winter, the aggregate insulation, temperature control of mixing water, concrete insulation during transportation, warehouse surface insulation and other In the aspect, the application of winter concrete construction technology is expounded and discussed.