Steel structure buildings will surely become the mainstream of prefabricated buildings

Steel structure building is a new type of building system. It has the advantages of light weight, fast installation, good earthquake resistance, fast investment recovery, and less environmental pollution. It is generally favored by the industry. Under the influence of national policies such as green energy conservation and environmental protection, resource recycling, etc., steel structures have gradually been widely used in the construction of prefabricated buildings, and the scale of the industry has continued to expand.

Although the application level of steel structure buildings in my country is relatively low compared with foreign developed countries, but drawing on the development experience of foreign steel structure prefabricated buildings and the influence of domestic policies, it can be predicted that the steel structure industry will receive With the rapid development, steel structure buildings will definitely become the mainstream choice for the construction of prefabricated buildings.

The domestic steel structure industry is developing rapidly

According to the structural system of prefabricated buildings, prefabricated buildings can be divided into precast concrete Structure, steel structure and wood structure. Among them, the steel structure is composed of beams, columns, steel trusses and other components supported by section steel and steel plates, and each component or component is usually connected by welding seams, bolts or rivets.

The development level of steel structure industry needs to be improved

Although the overall development speed of my country's steel structure industry is relatively fast, compared with the development level of steel structure buildings in developed countries such as the United States and Japan, The gap is still huge. At present, construction steel in industrialized countries such as the United States and Japan accounts for 60% of the national steel output, accounting for more than 55% of the total steel consumption, and the steel structure for steel accounts for more than 40% of the steel output. The construction area is more than 40%. At present, the amount of steel used for construction in my country accounts for about 15-20% of the national steel production, accounting for 25% of the total steel consumption, and the proportion of steel used for steel structures in the national steel production is less than 3%. It can be seen that the application level of steel structure buildings in my country needs to be improved, but at the same time, the development space is relatively large.

In addition, experts said that the domestic construction industry has rich experience in the construction of reinforced concrete structures, but the experience in the design and construction of steel structures is very lacking. Therefore, forming experience in steel structure construction, improving the accuracy and speed of construction, solving fire and anti-corrosion problems, and using emerging technologies will become urgent problems to be solved in the steel structure industry.

The application space of steel structure building is broad

In order to improve the industrialization level of building construction, the domestic construction industry has begun to study the application of steel structure in various buildings , is committed to expanding its application range and making buildings more green and environmentally friendly. It is understood that the 'Outline for the Modernization of the Construction Industry' issued by the Ministry of Housing and Urban-Rural Development proposed that by 2020, prefabricated buildings will account for more than 20% of new buildings, and by 2025, prefabricated buildings will account for more than 50% of new buildings. .

As the application structure of green building, steel structure building can meet most needs. However, as the country with the largest building volume and the largest steel output in the world, the application level of steel structure buildings in China is obviously lagging behind. At present, the proportion of domestic steel structure buildings in the construction market is less than 12%. From the perspective of my country's policy orientation and the application status of the steel structure industry, there is still a lot of room for development of steel structure buildings in my country.

From the perspective of my country's social development, the rapid population growth and the acceleration of urbanization in the next 30 years will also provide a broad space for the development of steel structure buildings. The production efficiency of traditional buildings is low, the environmental damage is serious, and the economic development is greatly negatively affected. Therefore, in the construction of new buildings, green and environmentally-friendly steel structure prefabricated buildings will face new development opportunities. The market size of China's residential steel structure is expected to exceed 350 billion yuan by 2022, and the development prospect is worth looking forward to. ”

In recent years, due to the obvious advantages of prefabricated steel structure buildings in environmental protection, energy saving, high efficiency, and factory production compared with brick-concrete structure buildings, landmark buildings built with steel structures For example, the National Aquatics Center in Beijing, the Diwang Building in Shenzhen, the Jinmao Building in Pudong, Shanghai, etc., according to this, some industry experts believe that the 21st century is the era of metal structures, and steel structures will definitely become the new era of architecture. Mainstream.

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