The tower crane will stop operating due to strong winds above Level 6.
1. Tower crane is the most commonly used lifting equipment on construction sites, also known as "tower crane". It is divided into sections by length (height) (referred to as "standard section"). Come and hoist construction raw materials such as steel bars, wooden corrugations, concrete, and steel pipes. Tower crane is an essential piece of equipment on the construction site.
2. Strong wind refers to winds above level 6. Strong wind speeds are superimposed with gusts of 2-3 frequencies, with gusts every 3-5 minutes being the most regular. During strong winds, even in the boundary layer, the systematic vertical airflow in the upper and lower layers reverses. Below 120m, there is a strong downdraft, and from at least 280m, it turns into a strong updraft.
1. Tower crane, referred to as tower crane, also known as tower crane, originated in Western Europe. According to records, the first patent related to tower cranes for construction was issued in 1900. In 1905, a crane with a fixed tower body and a jib appeared. In 1923, a prototype of a modern tower crane was made. In the same year, the first relatively complete modern tower crane appeared.
2. Tower cranes are divided into two categories: upper slewing tower cranes and lower slewing tower cranes. Among them, the bearing capacity of the former is higher than that of the latter. What we see in many construction sites is the upper rotary type tower crane with upward lifting and joint height.
3. In terms of meteorology, it is generally divided into twelve levels according to the strength of the wind. A level 6 wind is called a strong wind, with big branches shaking and electric wires whirring, making it difficult to walk with an umbrella; a level 8 wind is called a strong wind, and the thin branches of the tree can be broken, and people walking against the wind have great resistance; a level 10 wind is called a strong wind, which is rare on land and can be Trees are uprooted and buildings are severely damaged; winds above level 12 are called hurricanes, which are extremely destructive and rarely seen on land.
4. The microstructure of strong wind conditions and light wind conditions in the near-surface layer are very different. Since engineering wind resistance mainly focuses on strong wind conditions, in order to avoid problems caused by the characteristics of near-surface wind conditions under light wind conditions being different from those of strong wind conditions. confusion and error, so for the needs of engineering wind resistance research, strong wind samples (or processes) should be screened from observation data.