Design of buildings in modern steel structures

1. Design of fire protection

Although the steel structure has a high melting point, but in the case of high temperature, the steel structure will inevitably have some changes in the chemical properties, so the negative impact of the fire on the steel structure building is far greater than imagined. When the temperature reaches 400 degrees, the strength and load-bearing pressure of the steel structure will be reduced to half of the usual, once the temperature reaches 600 degrees, the internal structure of the steel structure is basically completely destroyed, losing all strength and stiffness. Therefore, in the design of steel structure buildings, it is necessary to take into account the fire situation and carry out fire protection of steel structure. The fire protection of the steel structure can effectively improve the fire resistance of the steel structure, extend the time of the steel structure in the fire, reduce the damage of the fire to the steel structure, and avoid the second crisis of the building caused by the fire. Different from steel structure fire prevention, reinforced concrete fire prevention is relatively simple, its own fire resistance is also better.

2. Design of anti-corrosion protection

Corrosion prevention of steel structure has always been the subject of research in the construction industry. With the increase of building use time, the steel structure will inevitably be exposed to the outside, after wind and rain and other natural force erosion will inevitably occur aging and rust, not only the beauty of the building will be affected, this time the stability and safety of the steel structure will be greatly reduced. In order to solve these problems, a variety of steel structure anticorrosive materials deteriorated structural materials came into being. The application of anti-rust, anti-corrosion, and fire corrosion coatings on the surface of steel structure is one of the most common practices in the current steel structure design. In addition, there are also many anti-corrosion and rust measures for steel structure components, generally before the steel structure components leave the factory, anti-rust, anti-corrosion coating and primer and fabric. The current use of anti-corrosion, anti-rust coatings are mostly imported from foreign countries, the cost is higher, I believe that with the improvement of the strength of China’s construction industry, it will produce its own brand of anti-corrosion, anti-rust coatings.

3.Design of pollution protection

The pollution here refers to noise pollution, light pollution and other pollution that is more common in buildings. Noise pollution, as the name implies, refers to the noise propagation caused by the poor sound insulation effect of the building structure and the poor sound stereo and surrounding effect caused by the unreasonable design of the building structure; Light pollution mainly refers to the unreasonable design of the internal structure of the building, which causes the light to affect the normal life of the residents. In addition, the unreasonable design will also lead to the inability of heat radiation to effectively enter the room. In order to reduce these pollution, in addition to the targeted design of the steel structure, the material properties of the building construction materials must be carefully screened, such as sound absorption, light, fire prevention, corrosion prevention and so on. Sound absorbing structure and sound absorbing building materials are one of the common methods to prevent noise pollution in the design of building structures. The quality of building noise control directly determines the quality of building performance. In order to reduce noise pollution, the corresponding architectural theoretical knowledge and legal provisions are also constantly introduced. The Windows use soundproof glass, the external walls use mixed soundproof materials, such as bricks, concrete, etc., the import and export use soundproof doors, only in this way can the sound insulation effect of the building be fully guaranteed.