Buildings are vulnerable to lightning strikes. If lightning protection measures are not in place, once a lightning disaster occurs, it will inevitably bring the risk of lightning strikes.
Lightning protection measures are mainly divided into external lightning protection measures and internal lightning protection measures. External lightning protection measures are for protection against direct lightning strikes, and internal lightning protection measures are
The measure is protection against induction mines;
1. External lightning protection measures
External lightning protection measures mainly consist of lightning protection devices, down conductors and grounding grids.
1.Air connection device
The building's air-termination devices are mainly lightning protection air-termination devices designed to be effective for buildings (structures), buildings, towers, etc. in the scenic area. Air-termination devices are mainly divided into four forms: lightning rods, lightning protection belts, lightning protection wires and lightning protection nets. Different buildings require different air-termination devices. For example, ancient buildings should be in
In order to protect the appearance of the building from damage, the lightning protection strip is used to connect the lightning.
2. Lead down the line
The lightning protection down conductors of buildings in the building, except for some brick-concrete structure buildings that use concealed lightning protection down conductors, such as metal-structured amusement equipment, cable cars, and buildings, towers, and other buildings in scenic spots ( Structures, basically only open laying methods can be used. When laying lightning protection down conductors, attention should be paid to laying down conductors symmetrically, keeping a safe distance from the pedestrian walkway, and piercing pipes 1.8 meters from the ground. Insulation protection measures. The spacing between lightning protection bows and down conductors should also comply with the requirements of international standards. The design and layout of lightning protection down conductors should not be less than two, because the specifications and quantity of lightning protection down conductors directly affect its diversion effect.
Therefore, the design and construction of lightning protection downconductors in buildings should attract great attention, and warning signs should be set up in places with dense tourist gatherings in buildings in accordance with national regulations.
3.Grounding grid
In order to prevent casualties caused by step voltage and ensure the personal safety of tourists, we must do a good job in connecting buildings, towers, towers and other buildings in important areas.
Grounding grid voltage equalization measures. When the grounding body is away from the entrance or sidewalk, the part of the grounding body in the grounding grid should be buried less than 1 meter, and anti-corrosion treatment should be done.
