When the outdoor daily average temperature is steadily lower than 5℃ for five consecutive days, winter construction starts, and the winter temperature drops. In many areas, the temperature is below 0℃ (negative temperature), and the moisture contained in soil, concrete and mortar freezes, making building materials brittle, which brings many difficulties to building construction.
Extended data:
Winter construction safety preparation:
1, winter construction site preparation
When the temperature is lower than 0℃ for five consecutive days or the average temperature is lower than 5℃ for five consecutive days, winter construction will be started. When entering winter construction, relevant machines, tools, additives and insulation materials should be organized in advance according to the physical quantity.
On-site power switch, control box and other facilities should be locked, and designated persons should be responsible for management. When entering winter construction, anti-skid measures should be taken at the construction site. Materials such as temporary water supply pipes on the construction site should be insulated against freezing. Do a good job in the trial mix test of concrete, mortar and admixture for winter construction, and put forward the construction mix ratio.
2. Technical preparation
Check the control piles and leveling points before construction in winter rainy season, and check them regularly during construction in rainy season to prevent settlement and displacement, and make records. Before the construction in winter rainy season, the person in charge of the project department shall make technical disclosure of the construction scheme in winter rainy season to relevant personnel in time, and the foreman shall make various safety technical disclosure to the team. Foreman prepares the consumption plan of materials and machines in winter rain period according to the actual situation, and reports it to the material group.
3, material machine preparation
According to the plan of materials and tools, organize materials and tools to enter the site, store them in categories, and set up emergency signs. The site for stacking materials should be flat and solid, and stow-wood should be piled under the materials, with the height of 300 mm from the ground, and the quantity should comply with the regulations to prevent collapse, damage to materials and waste.
Baidu Encyclopedia-Winter Construction