China is a big country in steel production and a big country in the steel structure industry, with a steel…
With the increasing application of metal structures in buildings, although it adds intense color to our city, in addition to the aesthetic appearance of prefab metal structure buildings, people also care about their usability and service life. As we all know, the service life of general reinforced concrete structures is about 60 years, and the presence of brick-concrete structures is about 50 years.
How long is the service life of the metal structure buildings?
From the analysis of technical data, the durability of the steel structure is excellent, and it will not be a problem for 100 years. Many steel structures in Europe are nearly 100 years old, such as the Eiffel Tower in France. However, metal structure buildings have a useful life of 50 to 100 years for various reasons.
How to extend the service life of metal structure buildings?
Many steel structures professional experts know that the design of steel structure housing is a very rigorous and complicated job. Some details determine the service life of the metal building. These details will certainly extend the life of metal structures.
1. Metal structure building insulation and fire prevention measures:
Metal has the characteristics of high strength, good thermal conductivity, good electrical conductivity, etc. When taking insulation measures, it must pay attention to fire safety. When the temperature of steel is higher than 150 ° C, the toughness decreases. At this temperature, the steel structure house will have severe deformation under its weight, which will cause the instability of the entire steel structure house. Therefore, fire protection measures must take for steel structure buildings.
2. Metal building roof design:
The design of the steel structure building roof should consider the drainage and seepage prevention function of the roof. Therefore, in the design drawing, the roof slope should not be less than 5 degrees, especially where there is a lot of rain and snow. The roof slope of metal buildings should determine according to the local snowfall or rainfall. In case of an emergency, when heavy rain strikes, drainage work should do well, and water should not accumulate or leak. If the flood enters the house, it will directly affect the service life of the house.
3. Set temperature expansion cracks on both sides of the steel structure buildings.
Expansion joint design of steel structure buildings will change due to the temperature of the natural environment. The temperature of the steel structure building itself will also change as the external environment temperature changes. The temperature change of the steel structure building will cause the deformation of the prefab metal building, which will cause the temperature stress of the steel structure building. The larger the steel structure residential area, the higher the temperature stress. Therefore, to avoid excessive temperature stress, it is necessary to set temperature expansion cracks on both sides of the steel structure buildings.
4. Anti-rust treatment of steel structure buildings:
Because some parts of steel structure buildings inevitably expose to the air, especially in humid environments. It is more likely to cause corrosion of the metal structure. Or steel structures in corrosive gas environments, the corrosion will be more serious. Therefore, it is necessary to pay attention to this point in the use of steel structure buildings and take anti-rust measures. Corrosion of steel could cause huge losses. Only adequate protection can ensure the long life of steel structures. Anti-corrosion coatings are a standard method of protection.
5. Fully understand the natural environment
Fully understand the surrounding environment, geological conditions, and climate, such as local rainfall, wind size, wind direction, and whether it is potentially dangerous. It is essential to understand these and to develop a reasonable foundation plan based on the above situation.
6. Never modify without permission
After the installation of the steel structure completed, the owner must not change it without permission, and cannot disassemble or alter the steel structure components. Unauthorized reconstruction may lead to building collapse.
7. Open windows for ventilation
Open windows to ventilate frequently can help the house’s air circulation and keep the house to stay dry and avoid pests.
8. Regular maintenance
During the use of steel structure buildings, they should maintain at regular intervals, which will significantly increase the service life. Under normal circumstances, the corrosion depth of steel structures is 0.4mm every ten years, so we must also pay attention to environmental conditions and maintenance issues.
It believed that if the above points achieved, the service life of steel structure buildings will significantly extend.