Detailed explanation of the structure of prefabricated houses: steel types, supporting systems and characteristics

1. Steel types

Prefabricated houses mainly use steel as load-bearing structural materials, including the following types:

Hot-dip galvanized steel: used to improve the corrosion resistance of steel and suitable for outdoor environments.

Cold-rolled coil: Common specifications are DC01 or DC04, with a thickness range of 0.8mm to 2.0mm, and have good strength and toughness.

345 MPa steel plate: used to manufacture solid mesh components, and the welding method includes SAW welding on alternating sides and adhesive welding of joints.

Light steel: such as Z-shaped or C-shaped beams, used for secondary structures such as roof trusses, supports and wall panels.

2. Structural system

The structural system of prefabricated houses mainly includes the following parts:

Main frame: composed of steel columns, steel beams and floor slabs, bolted to ensure the stability and seismic performance of the structure.

Secondary structure: including H-shaped steel beams, C-shaped steel purlins and support systems to support wall panels and roof panels.

Support system: Use high-strength bolts and anchors to fix the nodes to ensure the stability of the overall structure.

Floor system: Use hollow prefabricated panels or self-compacting concrete panels, which have good bearing capacity and thermal insulation performance.

3. Supporting system

The supporting system of prefabricated houses includes the following:

Wall system: Use sandwich panels, EPS, rock wool or polyurethane sandwich panels and other materials, which have good thermal insulation and fireproof performance

Roof system: Covering materials include color steel tiles, asphalt waterproofing membranes, etc. Some roofs use standing seam insulated doors and windows systems, which have good thermal insulation effects.

Door and window system: including steel anti-theft doors, aluminum alloy glass doors and PVC sliding windows, etc., to meet the needs of safety and beauty

Water and electricity system: water and electricity pipelines are usually reserved inside prefabricated houses for later installation and use

Decoration system: including indoor floors (such as tiles, wooden floors), wall decorations (such as latex paint) and ceilings (such as PVC ceilings)

4. Other features

Modular design: prefabricated houses support modular production, and the size and function can be customized according to customer needs.

Lightweight and energy saving: The high strength and lightweight characteristics of steel reduce the weight of prefabricated houses by 30%, while improving energy efficiency through integrated insulation materials.

Convenient construction: factory production and rapid on-site assembly greatly shorten the construction period and are suitable for a variety of scenarios.

The structural details and supporting systems of prefabricated houses reflect the advantages of efficient use of steel and modular design, giving them significant advantages in construction speed, seismic resistance and energy saving.