一、混凝土施工的冬期如何定义?如何理解连续五天日平均气温稳定低于+5℃?我国华北、西北、东北地区属于大陆性季风气侯,在季节交替期间经常有寒流或霜冻,气温波动剧烈,以日平均或最低气温作为冬期施工的季节定义,显然是不确切的。如当出现满足某界限温度即作为冬期施工,而次日气温回升又需解除,在季节 I. How to define the winter period of concrete construction? How to understand that the average daily temperature in five consecutive days is stable below +5°C? China’s North China, Northwest, and Northeast China are continental monsoon climates, and there are often cold currents or frosts during the alternate seasons. The temperature fluctuates. Severely, using the daily average or minimum temperature as the season definition for winter construction is obviously inaccurate. For example, when there is a temperature that meets certain boundary, that is, as winter construction, and the temperature rises the next day, it needs to be lifted again.