En 1090-2 Europe Standard Prefabricated Q355b Structural Steel Construction

Steel structure is a structure composed of steel materials and is one of the main types of building structures. The structure is mainly composed of steel beams, steel columns, steel trusses and other components made of section steel and steel plates, and adopts rust removal and rust prevention processes such as silanization, pure manganese phosphating, washing and drying, and galvanizing. Welds, bolts or rivets are usually used to connect components or parts. Because of its light weight and simple construction, it is widely used in large workshops, venues, super high-rises and other fields. The steel structure is easy to rust. Generally, the steel structure needs to be derusted, galvanized or painted, and it needs to be regularly maintained.

Specification:

Technical performance:
Thermal insulation and energy saving technology Light steel structure In order to ensure the thermal insulation effect, the thermal insulation materials used in the external walls and roofs of buildings can be used for a long time and can be thermally insulated. Generally speaking, in addition to filling the glass fiber mesh between the wall columns of the light steel structure residential buildings, a layer of thermal insulation material is attached to the outside of the wall, which effectively cuts off the thermal bridge from the wall column to the outer wall panel; the joists between floors The interior is filled with glass fiber to reduce heat transfer through floors; all interior wall columns are filled with glass fiber to reduce heat transfer between household walls.

Fire protection technology One of the most critical issues of light steel structure is the application of fire protection technology. The fire resistance level of light steel structure residential buildings is four. For light steel structure residential buildings, fire gypsum boards are attached to both sides of the walls and the ceiling of the floor. For ordinary fire walls and sub-family walls, 25.4 mm thick (1 inch) gypsum boards are used to protect them to meet the fire protection requirements of 1 hour. The glass fiber filled between the wall columns and the floor joists also plays a positive role in protecting against fire and heat transfer.

Sound insulation technology The light steel structure is filled with glass wool between the inner and outer walls and the joists of the floor, which effectively prevents the audio part transmitted through the air. For the impact sound transmitted through the solid, the following structural treatment is made: for the household wall, use two The wall column constitutes a second wall with an intermediate space; and for the small keel used to fix the gypsum board for the ceiling, an elastic structure with a small slot is used to effectively reduce the solid sound transmission between floors.

Prefabrication of steel elements:
Prefabrication and assembly of steel components are carried out on the steel platform according to the installation sequence and process requirements to ensure the quality of welding.

The distance between the splicing flange plate splicing seam and the web splicing seam of the profiled steel should be greater than 200mm. The splicing length of flange plates should not be less than 2 times the plate width; the splicing width of web plates should not be less than 300mm, and the length should not be less than 600mm.

In order to facilitate the welding and ensure the welding quality, try to make butt welding on the steel platform on the ground steel platform according to the size of the construction drawing, as far as possible, the stiffener plates, connecting plates, backing plates, and beams (beams) on the columns and beams.

In addition to the fabrication and assembly of prefabricated steel components on the steel platform according to the construction drawings and specifications, the manufacturability of on-site installation and changes in installation dimensions should also be considered.