Knowledge of steel structure installation sequence

Prefabrication and assembly of steel structure workshop components on the steel platform according to the installation sequence and process requirements, to ensure the quality of welding production, the spacing between the splicing flange plate joint and the web joint should be greater than 200㎜, the flange plate splicing length should not be less than 2 times the width of the plate; Web splicing width should not be less than 300 mm, length should not be less than 600 mm. Convenience for welding, to ensure the welding quality, as far as possible the stiffener plate on the column, beam, connecting plate, plate, pick beam (beam) on the surface of the steel platform set according to construction drawing size of the welding, on steel platform of prefabricated steel members in addition to the assembly according to construction drawing and specification requirements, should also consider manufacturability of on-site installation and installation size changes.

Steel structure characteristics: steel structure is mainly made of steel, is one of the main types of building structure, steel is characterized by high strength, light weight, stiffness, so it is particularly suitable for the construction of large span and super high, super heavy buildings; The material has good homogeneity and isotropy, and is an ideal elastomer, which accords with the basic assumptions of general engineering mechanics. Material plasticity, good toughness, can have large deformation, can bear dynamic load well; Construction time is short. Its high degree of industrialization, can carry out high degree of mechanization of specialized production; High processing accuracy, high efficiency, good sealing, so it can be used to build gas tanks, oil tanks and transformers, etc., its disadvantage is poor fire resistance and corrosion resistance. It is mainly used for load-bearing skeleton of heavy workshop, plant structure under dynamic load, plate and shell structure, towering TV tower and mast structure, bridge and warehouse and other large-span structures, high-rise and super-high-rise buildings, etc., steel structure should be studied in the future with high strength steel, greatly improving its yield point strength; In addition, new types of section steel will be rolled. For example, H-shaped steel and T-shaped steel and profiled steel plate to adapt to the needs of large span structure and super high-rise buildings. Steel structure is divided into light steel and heavy steel, there is no unified standard to judge, many experienced designers or project managers often can not fully understand, can be considered and judged by some data.