我国许多地方有较长的寒冷季节。由于受工期制约,许多工程的混凝土冬季施工是不可避免的。国内外对混凝土冬季施工理论和方法的探索研究认为,当环境温度降到4℃时,只要采用适当的施工方法,避免新浇混凝土早期浸冻,使外露混凝土与冬季气温保持较小温差,也会取得像在天暖施工时的效果。介绍了混凝土冬季施工的一般原理和常用的四种施工方法。 In many parts of my country, there are long cold seasons. Due to construction constraints, many projects of concrete winter construction is inevitable. The research on the theory and method of concrete construction in winter at home and abroad shows that when the ambient temperature is lowered to 4 ℃, as long as proper construction method is adopted, the early pouring of fresh concrete can be avoided and the temperature difference between exposed concrete and winter temperature can be kept small. Will achieve the same effect as in the warm construction. The general principle of concrete winter construction and four commonly used construction methods are introduced.