Should the steel concrete structure be lightning protected, and how to do lightning protection for t

Yes, the roof needs to be lightning protected, and the regular one also needs to pass the acceptance.

The structural material of steel-concrete houses is reinforced concrete.

That is, a mixture of steel bar, cement, coarse and fine aggregate (crushed stone), water, etc. The house with this structure has the advantages of good seismic performance, strong integrity, strong corrosion resistance, durability, etc., and the room is relatively large in terms of opening and depth, and the space division is relatively free. At present, multi-storey residential.

This structure is often used. However, this kind of structural process is more complicated, and the construction cost is also higher.

1. It is advisable to use lightning nets (belts) or lightning rods installed on buildings.

or a flash receiver consisting of a mixture of them.

The lightning protection net (belt) should be laid along the corners, ridges, eaves and eaves corners and other parts that are susceptible to lightning strikes, and should be formed in the entire roof of no more than 10m 10m or 12m 8m (grid density is determined according to the type of building) grid. All lightning rods should be connected to each other by lightning belts.

2. There should be no less than two down wires, and they should be evenly or symmetrically arranged along the surrounding of the building, and their spacing should not be greater than 18m (the spacing of down leads should be determined according to the building category). When only the steel columns or column reinforcements around the building are used as down leads, down leads can be set according to the span, but the average spacing of the down leads should not be greater than 18m.

3. The impact grounding resistance of each down wire should not be greater than 10. The grounding of anti-direct lightning should share the same grounding device with the grounding of lightning induction, electrical equipment, information systems, etc., and should be connected to buried metal pipelines; When they are not shared or connected, the distance between the two in the ground should conform to the lightning protection design code of the building.

requirements, and not less than 3m.

In the case that the common grounding device is connected to the buried metal pipeline, the grounding device should be laid around the building to form an annular grounding body.

There are normative requirements. The roofs need to be lightning protected, and the regular ones also need to pass the acceptance.

It is better to deal with lightning protection, which is safer.

The methods that can be used to do lightning protection in steel structures include the following:

1.Grounding the steel structure: This is a common method to effectively ground the steel structure by selecting a suitable grounding point.

2.Installation of lightning rods: Lightning rods are installed at elevated heights such as the roof of buildings to channel electrostatic charges between the building and the ground into the ground.

3.Install lightning nets: The role of lightning nets is to channel the electrical charge between the building and the ground into the ground to avoid lightning hitting the building.

4.Strengthen the structural design: When the steel structure is designed, it can enhance its ability to resist lightning by increasing the strength and stiffness of the structure.

It should be noted that the above methods require professional electrical engineers or structural engineers to design and construct, and appropriate lightning protection measures should be selected according to the actual situation.

Summary. Steel structure lightning protection method: 1, lightning device according to the characteristics of light steel structure building, the roof of light steel structure building is obviously not suitable for the installation of tall and heavy lightning rod on such buildings, and the "building lightning protection design code (2000 edition)" (GB 50057-94) article gives the metal roof as a building (except for the first class of lightning protection buildings) lightning protection lightning four requirements.

The enclosure system of the light steel structure building is non-combustible, and the thickness should not be less than when the metal plate is used as a flash connector. The specification makes different requirements for the thickness of the metal plate according to the different situations of whether there are flammable products under the metal plate, and clearly stipulates that "when there are no flammable products under the metal plate, its thickness shall not be less." Rigid polyurethane is a B1 grade building material with a thermal conductivity of flame retardant; Polystyrene is a flame-retardant material, with an oxygen index of not less than 30 and a thermal conductivity, which is flame-retardant and self-extinguishing; Rock wool is a non-combustible material with a thermal conductivity; Glass wool is a class A building material, with a thermal conductivity of non-combustible body.

In addition, the adhesive used for the insulation core material is also flame retardant. Specification.

Hello. Steel structure lightning protection method: 1, lightning device according to the characteristics of light steel structure building, the roof of light steel structure building is obviously not suitable for the installation of tall and heavy lightning rod on such buildings, and the "building lightning protection design code (2000 edition)" (GB 50057-94) article gives the metal roof as a building (except for the first class of lightning protection buildings) lightning protection lightning four requirements.

The enclosure system of the light steel structure building is non-combustible, and the thickness should not be less than when the metal plate is used as a flash connector. The specification makes different requirements for the thickness of the metal plate according to the different situations of whether there are flammable products under the metal plate, and clearly stipulates that "when there are no flammable products under the metal plate, its thickness shall not be less." Rigid polyurethane is a B1 grade building material with a thermal conductivity of flame retardant; Polystyrene is a flame-retardant material, with an oxygen index of not less than 30 and a thermal conductivity, which is flame-retardant and self-extinguishing; Rock wool is a non-combustible material with a thermal conductivity; Glass wool is a class A building material, with a thermal conductivity of non-combustible body.

In addition, the adhesive used for the insulation core material is also flame retardant. Specification.

Can be connected lightning protection round steel, more than 30 meters although not very high but not low, do not do lightning protection, it is easy to have an accident, electricians can also do, it is best to find a professional, survey the surrounding situation, according to the most appropriate level to do.

You don't need to scrap labor and waste, even if you really have an accident in the end, it has nothing to do with you

The steel structure on the roof needs to be a lightning protection system, which generally does a good job of direct lightning protection, grounding, overvoltage protection, shielding, and equipotential of equipment lines.

Roof steel structure lightning protection system method:

The general design institute according to the traditional roof to do the roof lightning protection belt, this kind of roof fixed support clip is not good to fix, many engineering team practice is to connect the roof panel and the lightning protection belt of the parapet wall, if it is an all-steel structure of the plant, the roof lightning protection can be made of concrete piers, placed on the steel structure plant daughter wall, can also be fixed on the C-shaped steel of the parapet wall, but special attention should be paid to leakage, if the maintenance structure is made of brick concrete structure, the connection of the steel structure must be reliably connected, and the thread buckle must be connected to the ground wireThe steel structure can be connected with the lightning protection belt, as long as the reliable connection with the lightning protection is guaranteed, it meets the requirements of the specification.

Answer: Steel buildings need to do lightning protection systems. Although the steel structure house plays the role of lightning protection of the "Faraday cage", because the humid air in the room, the electrical equipment made of steel, etc., may conduct electricity, so the installation of lightning protection equipment can play a double insurance.

A Faraday cage is a metal casing that prevents electromagnetic fields from entering or escaping. An ideal Faraday cage consists of an unbroken, perfectly conductive layer. In practice, this ideal state cannot be achieved, but it can be achieved by using a copper sieve with fine mesh.

For optimal performance, the Faraday cage should be grounded directly.

Lightning protection must be done, mainly grounding, which can be done by general electricians.

A must, a professional approach. Otherwise it's too dangerous.

Well, yes, that's a must.

Don't, because the steel of the abutment is connected directly into the dirt.

1.When the span of the bridge body is large, it is necessary to erect a flash rod in the middle to let Chang Song connect the flash, and the flash rod can be directly set in the prominent position of the bridge height. In the street lamp, the upper part of the surveillance camera pole needs to be set up to connect the flash short pole.

2.Bridgehead booths, toll booths, street lights, and monitoring require lightning protection for power and signal systems.

3.The metal structure of the bridge body needs to be equipotential connected and grounded to ensure that all the metal components of the bridge body are on an equipotential plane, and to ensure that the metal body of the grounding device is effectively electrically connected, and the grounding resistance meets the requirements. In the expansion joints of metal components, if there is no good electrical connection, it is necessary to use jumper flexible wires for connection.