Academician of Chinese Academy of Engineering: Vigorously develop steel structure buildings, steel structure buildings are most suitable for building industrialization

Release time:

2017-07-12 00:00

From 8th to 9th, the annual work meeting of the Steel Structure Expert Committee of the China Construction Metal Structure Association was held in Wuhan. At the meeting, three academicians of the Chinese Academy of Engineering-Professor Shen Zuyan of Tongji University, Professor Dong Shilin of Zhejiang University, and Professor Mark Jian of Guizhou University jointly It is recommended to vigorously develop steel structure buildings to resolve the current serious excess steel production capacity. Shen Zuyan uses "light, fast, good and provincial" to describe the characteristics of steel structure buildings. He believes that steel structure buildings are most suitable for industrial construction. Dong Shilin brought his latest research results: a "spherical reticulated shell" composed of six-bar tetrahedral units, which is convenient for industrial prefabrication production. Mark Jian promotes multi-layer large-span "grid structure" on site, mainly for assembly construction. According to reports, 80% of the components of the steel structure building can be processed in the factory, and it is easy to dismantle. Some products and materials can be reused and recycled, which is an important representative of green buildings. Compared with traditional concrete buildings, its own weight is reduced by 40%, the construction efficiency is increased by 4 times, the construction period is shortened by 1/3, the carbon emission is reduced by 35%, and the housing rate is increased by more than 5%, which is more popular in developed countries. Statistics show that in the past five years, the annual steel consumption of steel structure buildings in China ranges from 30 million tons to 50 million tons, accounting for about 5% of the steel output, which is significantly lower than that of the United States, Japan and Germany, compared with 45%, Japan and Germany. Academicians believe that by vigorously promoting and developing steel structure buildings, we can not only resolve the excess capacity of the steel industry, but also promote the industrialization of construction and realize the transformation and upgrading of traditional industries.

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New Technology of Erection of Green Building with Steel Structure Reflects Energy Saving and Environmental Protection

With the increasing pressure of energy conservation and emission reduction in China, the state pays more and more attention to environmental protection and natural resource protection. The development of green buildings has been written into the national "Twelfth Five-Year Plan", which is undoubtedly a rare development for the steel structure industry. opportunity. The "Twelfth Five-Year Development Plan for the Construction Industry" officially announced by the Ministry of Housing and Urban-Rural Development pointed out that during the "Twelfth Five-Year Plan" period, the total output value and added value of the national construction industry should grow at an average annual rate of more than 15%.

The fire protection of steel structure buildings should meet the fire protection requirements.

Any building in the design, must do a good job of fire protection and other important protection measures. With the rapid development of economy, China's construction steel structure has been more and more widely promoted and applied since the 1990 s. Modern steel structure engineering is an important part of large-scale modern buildings in China. Because the steel structure has its light weight, low foundation cost, suitable for soft foundation and easy installation, fast construction, short cycle, construction pollution is small, good earthquake resistance and other comprehensive advantages, so the steel structure building was listed as a promotion project by the original Ministry of Construction.

Steel structure residence is a high and realistic choice

According to the interim report of steel enterprises issued by the China Federation of Iron and Steel Enterprises, listed iron and steel enterprises suffered large-scale losses in the first half of the year, and their net profits narrowed sharply, and the degree of losses further intensified in late August. Some people believe that steel overcapacity and excessive inventory affect the profits of the steel industry in the later stage, while others believe that the deep-seated reason lies in the slowdown of China's economy and the sluggish market demand.

Steel structure engineering regardless of the nature of the country

It has been widely used in developed countries, so it is called the main representative of green building. The foundation cost is low, the construction area is large, the construction quality is high, it is suitable for industrialization and standardized production, can be dry green construction, suitable for different climatic conditions, is not affected by the construction season, and has the advantages of low comprehensive cost. At the same time, the steel structure It can also reduce the pollution of construction waste to the environment and can be recycled in the whole life cycle. Steel structure building is in line with the development direction of energy conservation and circular economy in China, and it is one of the structures with the least impact on the urban environment.

Relevant theory of steel structure reinforcement

If the steel structure has serious defects and damages or changes the operating conditions, and the strength, rigidity or stability of the structure does not meet the operating requirements after inspection, the steel structure shall be strengthened. Due to the design or construction of steel structure defects, such as insufficient weld length, rod cut is too long, so that the section weakened too much and so on.

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