How are steel structures affected by strong typhoons?

Under a strong typhoon, the steel structure will be significantly affected as follows:

1. Structural deformation: The strong wind pressure brought by a strong typhoon will cause large deformation of the steel structure, if the deformation exceeds the capacity of the steel structure, it will lead to structural instability and damage.

2. Destruction of node connection: the node connection of the steel structure is the key part, under the action of the strong typhoon, some nodes may be damaged by excessive wind pressure, thus affecting the stability of the whole structure.

3. Damage to the roofing system: The roofing system is an important part of the steel structure, A strong typhoon brings gusts of wind and rainwater which will cause damage to the roof, such as the color steel plate being lifted, ridge cover plate being lifted by the wind and so on.

4. Vibration and fatigue damage: The dynamic load generated by a strong typhoon will cause vibration of the steel structure, and the long-term repeated vibration may cause fatigue damage to the structure, affecting the service life of the steel structure.

Therefore, in strong typhoon-prone areas, when designing steel structures, the influence of wind load should be fully considered and effective wind-resistant measures should be taken, such as strengthening node connection and setting reasonable support systems, etc., to improve the wind-resistant ability and stability of steel structure. At the same time, regular structural testing and maintenance should also be carried out to discover and deal with potential problems promptly, to ensure the safe use of the steel structure.