What effect does the wind have on building construction? ! ! ! ! !

Strong wind affects the stability of formwork, such as the stability of cable wind rope and the verticality of structure. The "stress swing" of high-rise buildings exists objectively when there is wind. The higher the floor, the greater the relative "swing amplitude".

Secondly, the temperature difference caused by strong wind is easy to cause the structural surface to get cold during concrete pouring, and the surface cracks are caused by premature formwork removal and cold water spraying during curing. It is suggested to adopt formwork maintenance and cover the concrete surface with geotextile (cover the concrete after the final setting, and the geotextile will stick to the concrete surface if it is covered too early).

Key points of construction safety control in windy weather:

1, in case of gale of magnitude 6 or above, outdoor climbing and suspended aerial work are not allowed.

2, strong wind construction template should have temporary wind reinforcement measures.

3. When there is a gale of magnitude 6 or above, scaffold erection and dismantling operations should be stopped, outdoor formwork dismantling and high-altitude installation should be suspended, and outdoor hoisting and hoisting operations should be stopped. The construction elevator must stop running, lower the ladder cage to the bottom and cut off the power supply.

4. In case of strong winds of level 5 or above, all formwork cranes shall be stopped.

5. Dismantle the tower crane in windy weather.