针对大体积混凝土冬施过程中易出现“内热外冷”及其边缘易受冻 ,内部不易受冻的特点 ,提出了缓凝防冻、低温补偿收缩防裂及大棚保温 ,防止温差裂缝及降温温差过大等一系列冬施技术措施 ,经工程实践表明 ,该措施能有效地保证工程质量 ,可供施工人员参考。 In the process of winter application of mass concrete, “internal heat and external cooling” easily occur and its edges are easily exposed to freezing and the interior is not easily frozen. Aiming at the characteristics of large-volume concrete with slow-freezing and anti-freezing effect, shrinkage cracking and shed insulation at low temperature are proposed to prevent temperature difference and temperature drop Too large and a series of winter facilities, technical measures, the engineering practice shows that the measures can effectively ensure the quality of the project, for construction workers reference.