Nowadays, there are many kinds of building materials in society. They are commonly used in large public buildings and temporary facilities for earthquake relief. People's environmental protection awareness is getting stronger and stronger. The materials of steel structure houses are in line with this concept and are put into residential buildings, and they have also been widely promoted. People are more concerned about the advantages and disadvantages of steel structure houses. Let's learn about them together.
一. Advantages of steel structure buildings
1. The overall cost is low, and the stable supply of steel causes little price fluctuation. The wall surface of thin-walled light steel structure can maintain an excellent plane. This also means that the wall surface will not rebound and shrink and crack when you nail it. Because the material can be pre-cut to the required length, waste is reduced to a great extent. In addition, the edge materials of steel can also be sold, which greatly reduces waste.
2. It does not damage forest resources. Light steel structure housing originated in the United States. The background is that the forest destruction caused by the excessive felling of trees has led to the deterioration of the entire global environment and has become the focus of global attention. In this situation where the world advocates the protection of forests, this technology was jointly developed by 13 American companies and quickly popularized in the United States. Due to environmental protection, reasonable design, fast completion speed, and excellent earthquake resistance, it was built in Japan after the Great Hanshin Earthquake in 1995 and has become increasingly popular.
3. Clean and environmentally friendly, no harmful substances are produced, and 100% of the materials used are steel. The various parts are connected with screws and nails, and no welding or adhesives are used. Therefore, there is no need to worry about the harm to the human body caused by the use of chemicals during the construction process. The construction site will not generate a lot of dust and noise to pollute the surrounding environment.
4. The construction is fast, the steel structure is easy to manufacture, easy to adopt industrial production, the construction and installation period is short, the steel structure is composed of various profiles, and the construction is very simple.
5. Insect-proof, earthquake-resistant, storm-proof, strong characteristics, steel is a non-combustible material, and after deep galvanizing protection, it can prevent corrosion and termite infestation, and can automatically repair the damage of the coating.
6. The thermal insulation system has excellent performance and can save up to 70% of energy compared with ordinary brick-concrete buildings.
7. It can be recycled. Light steel structure houses make full use of the superior characteristics of steel and meet the mainstream of today's building materials. Thin-walled light steel structure buildings use steel and will not age with the passage of time. In addition, 100% of scrap steel can be recycled; at the same time, thin-walled light steel structure buildings can also use recycled steel. In the United States, a 180-square-meter house can be built for every 5 to 6 scrapped cars.
8. Save labor. Light steel structure houses are similar to wooden structures. Under the same building requirements, the labor time and cost of skilled workers in thin-walled light steel structures are much lower than those of wooden structures. The profiles of thin-walled light steel structures are mass-produced in factories. The skeleton can be assembled in factories and installed on site. Only one on-site instructor and about seven workers are needed to complete the construction of the skeleton of a house.
9. The design is very flexible. The variety of material sizes and thicknesses provides a lot of space for designers to consider whether they are designing for cost or efficiency.
二. Disadvantages of steel structure buildings
1. The cost is relatively higher than that of traditional brick-concrete and steel-concrete.
2. Light steel structure houses have unique steel frames, walls, roofs and other materials, as well as standardized and stereotyped internal layouts and supporting facilities. Generally speaking, people want to modify their houses at will to meet their own requirements, but the steel structure has divided the house according to the design and cannot be modified at will.
3. Steel is easy to rust, and protective measures should be taken. Steel is easy to rust in a humid environment, especially in an environment with corrosive media. It must be painted or galvanized, and it should be regularly maintained during use. Aluminum-zinc-plated steel must be used to maximize corrosion protection, so that the main steel structure can be used for about 50 years.
4. There are many requirements for new materials. The structure of light steel houses is equipped with thermal insulation and other materials. Lightweight new building materials will be generally used.
5. The heat resistance of steel structures is good, but the fire resistance is poor. Steel is heat-resistant but not resistant to high temperatures. The higher the temperature, the lower the strength. When there is radiant heat around and the temperature is above 150 degrees, shielding measures should be taken. If a fire breaks out and the temperature of the structure reaches over 500 degrees, it may collapse instantly. But there is a way to avoid this, which is to add an extra step to wrap it with concrete or bricks.
