The Buildings Site

The face of a strong earthquake development of light steel structure construction is imperative

At 7:49 on April 14, 2010 Xu, Yushu County, Yushu Tibetan Autonomous Prefecture in Qinghai Province earthquake of magnitude 7.1 occurred. As at 2 o'clock on the 15th, the earthquake has caused 589 deaths and 8,000 injured. Most local building collapsed, several people were buried, it is estimated there may be further casualties.
 The earthquake disaster prevention, engineering measures, simply, is a matter of building earthquake. The earthquake collapsed the face of most of the building, the development of light steel structure construction is imperative.
The face of a strong earthquake is imperative to the development of light steel construction
 
And Yushu Wenchuan earthquake struck a sensitive nerve of the people of the earthquake, people are becoming more emphasis on the seismic housing. In this trend, in the construction industry also led to a major "earthquake" of new building materials are also attracted much attention. With the building energy conservation and seismic requirements have become increasingly prominent, foreign "light steel villa" improvement of the domestic traditional wooden structure, and gradually developed in the Chinese iron and steel resources, popularized, has gradually received much attention.
  Detection of Building Energy Research reports that energy-saving advantages of light steel building structures far more than concrete. Light steel structure construction is a truly sustainable energy-saving green building, with strong earthquake, good insulation, energy-saving effect is remarkable and so on, should become an integral part of the construction industry.
It is reported that in January to April this year, it was reported on a light steel structure for a 12-week residential building energy efficiency and air-conditioning heating system tracking and detection. The results showed that the measured light light steel residential heating energy consumption of residential layer insulation than brick save 41.99%, coal consumption in heating season savings of 45.40%.
    As the scale of China's current residential development to sustainable development made a considerable challenge, a lot of energy in the construction and use of the process is consumed, it has been building energy efficiency a priority. "
    In addition, excellent seismic performance of light steel concern. Lee always said, "5? 12" after the Sichuan earthquake, tragic casualties of the seismic capacity of residential buildings proposed direct requests. Modern light steel-based North American experience shows that the light wooden structure housing the earthquake resistance is no substitute for a great advantage, should be suitable for earthquake-prone areas to promote the architectural forms.
Seismic analysis of building methods:
        
        The current residential construction market structure include: brick and concrete structure, reinforced concrete structure, the metal frame structure, and almost only occur in the villa where the wooden structure. Speaking from the seismic standards, these structures are in accordance with the Ministry of Construction of housing standards, up to eight minimum security requirements. But from the safety factor, the light steel and wood structure than other forms. As the light steel structure is flexible connection, in the event of a strong earthquake, but it will not collapse deformation and fracture of the situation.
Speaking from the building structure, wall structure of light steel building is the best form, its advantage is that a relatively high degree of seismic safety and good, the focus of a distributed bearing housing, and with good shocks. Drawback is that, once built, the structure can not be tamper with.
        Seismic standards:
        Seismic design of building construction must to be able to open construction. According to national norms, Chongqing housing fortification of 6 degrees, that is at least able to withstand an earthquake intensity is 6 degrees. In China, the building at the design stage can not meet this standard, certainly can not be planning for approval. Meanwhile, according to the different buildings system, the design is different. For example, brick and reinforced concrete structure on the seismic performance of the different brick buildings more suitable for low-rise buildings.
Seismic traditional architecture is not the root cause:
Extensive use of precast panels is the large range of earthquake building collapse in the main. Prefabricated panels and the frame compared to the overall poor, and frame structure is not easy to overall collapse in the earthquake. Has banned the use of prefabricated panels, but in some counties are still widely used. Proposal should be limited to the use of prefabricated buildings, should be limited to brick. Structural problems of rural buildings is a big problem, how much money farmers, but to ensure building construction on very strong.
 
Principle of light steel structure
        Light steel is mainly due to excellent seismic performance, light weight, resistance to deformation, difficult to collapse. Light steel construction, light weight, metal material properties and the need of the wall structure of light steel structure system determines the form of natural seismic performance. Because earthquake activity around and up and down activity, together with the light steel fasteners to form a secure and stable box, will not arise because of the earthquake shaking collapsed wall or floor fall endanger safety; Brick Seismic performance difference is that most people recognized that this earthquake is already a good example. Concrete building seismic performance to achieve the same structure to pay the higher cost of materials, on the contrary will increase the overall construction costs, but also increase the difficulty of construction and design difficulty.
Light steel structure housing than the traditional residential, has its obvious advantages:
(1) light steel parts production factory and the high degree of mechanization, commercialization is high.
(2) on-site construction speed, mainly dry operation is conducive to civilized construction.
(3) steel building is environment-friendly products for sustainable development.
 
(4), light weight, good seismic performance.
(5) Integrated economic indicators are not higher than the reinforced concrete structure.
 
(6) is compared to brick masonry building, brick with soil brought to avoid the waste of resources.
 
(7) and because light steel wall thickness of the small, brick structure than can increase the effective use of space;
(8) compared with the reinforced concrete house, because light steel structure of steel can be recycled after use, but the concrete can not be recycled construction waste is definitely the future, resulting in pressure on the environment and the concrete to 40 years to all dry, this can easily lead indoor humidity, humidity is not conducive to human health. But the light steel structure is no need to concrete, so there is no problem.
(9) of light steel structure can be good. Because earthquake activity around and up and down activity, together with the screw up a light steel structure with safety and stability of the box, does not arise because of the earthquake shaking collapsed wall or floor fell endanger personal safety.
(10) by dry construction of light steel structure construction method, the information will not result in water waste. And cost savings

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