The characteristics and advantages of steel structure space frame

Space frame processing for the space frame production of each process has extremely strict requirements, from the space frame design you need to understand the structural characteristics of the steel structure of the space frame to carry out, its later space frame processing production, are required for the characteristics of the space frame steel structure to strictly control the control, then for the characteristics of the space frame steel structure how much do you know? Here we introduce the main characteristics of steel structure space frame.
1, the material is uniform, more in line with the mechanical calculation assumed just because of the scientific control of smelting and rolling process, its internal structure is more uniform, close to a variety of same-sex, in line with the ideal elastic-plastic body. Therefore, the uncertainty of the calculation is small, and the calculation results are more reliable.
2, plasticity, toughness good plasticity: the steel structure will not suddenly break due to overload under normal conditions, there is a more obvious deformation before destruction, easy to be found. Just a good plasticity can reduce the local peak stress, so that the stress distribution changes slowly. Good toughness: steel structure is suitable for working under dynamic load, so it is more advantageous to use steel structure in earthquake zone.
3. High strength and light relative weight. The mass density of the structural material is? The strength of the material is like Saturn. Take building steel, wood and reinforced concrete as examples, respectively calculate their density and strength ratio. From the comparison of the α values of the three materials, it can be seen that the α value just now is the smallest. This shows that, as a load-bearing material, the strength is higher and the weight is lighter. Therefore, the use of just in engineering structures can save materials. If the three materials of reinforced concrete, ordinary steel and cold-formed thin-wall type are used to design a plane truss with the same span and the same load, the reinforced concrete roof truss is the heaviest, the ordinary rigid roof truss is lighter (about 1/3 to 1/4 of the weight of the reinforced concrete roof truss) and the cold-formed thin-wall steel roof truss is the lightest (only 1/10 of the weight of the reinforced concrete roof truss).
Through the example of roof truss design, it can be seen that the same use of steel, such as the form of steel (ordinary steel and cold-formed thin-wall rigid), the weight of the designed structure will also be very different. The light weight of the steel structure and the small foundation load can reduce the cost of the foundation project, and also reduce the workload of hoisting and transportation. Due to the high strength of steel, steel structures are suitable for large-span, high-rise structures, and heavy structures that carry a lot of load. However, the strength of the material is often not fully utilized, because in the design of the component, the section required by the strength condition is small, and the section required by the stability condition or stiffness condition is larger.
The development of structural space frame engineering building is very rapid, especially in some big cities, iconic high-rise buildings stand, for the domestic steel structure space frame engineering in our country opened a new page. We can see from the substantial growth of the number of space frame companies alone that the increase is large. In this good situation in China, how to take advantage of the situation, grasp the quality of design and construction, this is a very urgent problem at present. According to the current situation in China, it is not difficult to see that this steel structure space frame project has been widely used in single-storey industrial plants, multi-storey industrial plants, office buildings and non-load-bearing components in high-rise buildings due to its wide use and obvious advantages. So what is the reason for the wide application of steel structure space frame engineering?
The big advantage of light steel structure is that all components can be splined and installed by the factory production site, which only takes 45 days to 2 months for generally small industrial plants, and about 8 to 12 months for reinforced concrete buildings.
Second, the comprehensive economic benefits are good because the building itself is light in weight, under normal circumstances there is no need to do pile foundation, which can save investment; Due to the use of polystyrene foam sandwich board or single board with thermal insulation cotton and other measures, the heat preservation, heat insulation and seal separation effect is good. According to the current market price in China, the cost of light steel structure has been lower than the reinforced concrete structure, when the span of the plant is larger, its advantage is more obvious, which is also a major advantage of its competition.
Good seismic performance Because the steel structure is a flexible structure and light weight, it can effectively reduce the degree of earthquake response and disaster impact, which is very conducive to earthquake resistance. China is a country with many earthquake areas, and steel structure should be widely used in the construction of earthquake areas, which can greatly reduce earthquake disasters and casualties. The painful lesson of Tangshan earthquake should be remembered. At present, Tianjin has officially launched light steel structure housing.
Once the owner is not satisfied with the site or unexpected changes in the external environment, the entire building can be demolished in a very short period of time, with minimal loss, and all these are not available in reinforced concrete buildings. It is because of the many advantages of light steel structure, and with the continuous emergence of new products of fire prevention and corrosion prevention in recent years, the shortcomings of poor corrosion resistance of light steel structure have been better solved, making it widely used in industrial plants and civil facilities.