Steel structure is steel material and is one of the most important architectural types. It consists mainly of steel beams, columns, beams, and steel plates. It uses preservative preservative technology such as silicate, pure manganese phosphate, dry cleaning, and zinc plating. The connection of members and parts is usually structurally lightweight and simple welding is widely applied to fields such as large workplaces, active sites and skyscrapers.

Steel has the characteristics of high strength, light weight, good overall strength and strong deformation resistance, which makes it particularly suitable for the construction of large, super high and super heavy buildings. The material has good uniformity and isotropy, which makes it an ideal elastic material that best meets the basic assumptions of general technical mechanics; This material has good plasticity and toughness, can produce significant deformation and can withstand dynamic loads well; It has a high degree of industrialization, can be professionally manufactured and has a high degree of mechanization.

Features:

1. The material has high strength and light weight
This steel has high strength and elasticity, and its density is relatively low compared to concrete and wood. Therefore, under the same stress conditions, the steel structure has a small cross-section, light weight and is suitable for transportation and installation. It is suitable for large span, high altitude and heavy structures.
2. Steel has good toughness, plasticity, uniform material and reliable structure
Able to withstand impacts and dynamic loads, with excellent seismic performance. The internal structure of the steel is uniform, approaching an isotropic homogeneous body. The actual working performance of the steel structure conforms to the theory. Therefore, the reliability of steel structures is higher.

3.Steel structure manufacturing and installation have strong mechanical properties
The steel structure components are easy to manufacture in factories and assemble on site. Mechanical manufacturing of steel structure components in factories has the characteristics of high precision, high production efficiency, fast assembly speed on site and short construction time. Steel structures are the most industrialized structures.
4.The steel structure has good sealing performance
Due to the completely closed welding structure, high pressure tanks, large oil tanks, pressure pipes, etc. have good air and water tightness.

5. The steel structure is heat resistant and not fire resistant
When the temperature is below 150 ° C, the performance of steel does not change much. Therefore, steel structures are suitable for high temperature workshops, but when the surface of the structure is exposed to heat radiation of about 150 ° C, insulation boards must be used for protection. When the temperature is 300 ° C to 400 ° C, the strength and elasticity module of steel is significantly reduced. When the temperature is about 600 ° C, the strength of the steel bends to zero. In buildings with special fire protection requirements, steel structures must be protected with refractory materials to improve fire resistance.

6. Low corrosion of steel structures.
Especially in humid and corrosive environments prone to rust. Steel structures typically require rust removal, galvanizing or painting, as well as regular maintenance. Special measures such as"zinc block electrode protection"need to be taken for offshore platform structures in seawater to prevent corrosion.
7. Low carbon, energy saving, environmentally friendly and reusable.
When disassembling the steel frame structure, almost no construction waste is generated and can be recycled.

 

Application:

Compared with the powerful concrete structures, iron structures have the advantages of overall robustness, fast construction speed, good seismic performance, and fast recovery. Iron is stronger than bricks and concrete. Under the same conditions, the structure of iron is lighter. From the perspective of damage, iron structures have obvious deformation precursors, which belongs to the ductile failure structure and can be detected first to avoid danger.

The steel structure workshop has the advantages of light structure, saving foundation, less materials, low cost, short construction period, large span, safety and reliability, beautiful appearance, stable structure, etc. The steel structure workshop is widely used in long industrial plants, warehouses, cold storage, high-rise buildings, office buildings, Multistorey car park and residential buildings.

 

Steel structure installation:
Prefabrication of steel elements:

The prefabrication and assembly of steel components should be carried out on the steel platform in accordance with the installation sequence and process requirements, while ensuring welding quality.
The distance between the splicing joint of the wing plate and the web plate of the profiled steel should be greater than 200mm. The splicing length of the wing plate should not be less than twice the width of the plate; The width of web splicing should not be less than 300mm, and the length should not be less than 600mm.

In order to facilitate welding and ensure welding quality, the steel support of the grounding steel support should be welded as much as possible according to the size of the construction drawings, and the stiffening plates, node plates, bottom plates, and beams (beams) of columns and beams should be welded as much as possible.
In addition to the production and assembly of steel accessories, attention should also be paid to the manufacturability of on-site assembly and changes in the installation dimensions of steel substrates according to construction drawings and specifications.