Structural Diagram of Concrete Prefabricated Houses

There is currently no publicly available standard structural diagram for concrete prefabricated houses, but their construction logic can be understood through their structural characteristics and design points. For specific diagrams, it is necessary to contact professional manufacturers for custom designs. The following provides an explanation from three aspects: structural system, modular design, and construction points.

Structural System: Load-Bearing Logic of Full-Frame Shear Walls

The core structure of concrete prefabricated houses is a full-frame shear wall system, which is cast in one piece using a mold with C35 concrete and Φ8-Φ14 threaded steel bars. Its load-bearing system adopts an integrated design of "L-shaped columns + rectangular beams + floor slabs":

• L-shaped columns: As vertical load-bearing components, they combine high-strength steel bars with concrete to bear vertical loads of the house (such as self-weight and occupant activity loads), while enhancing resistance to lateral forces (such as wind loads and seismic actions) through their L-shaped cross-section design.
• Rectangular beams: Horizontally connecting the L-shaped columns to form a frame structure, they transfer floor slab loads to the columns and balance overall stress through the stiffness distribution of the beams.
• Floor slabs: Cast simultaneously with the beams and columns to form an integrated load-bearing surface, avoiding the issue of weak node connections in traditional prefabricated structures and improving seismic performance.
  This system ensures dimensional accuracy of components (error ≤ 2mm) and strength of connection nodes through one-piece molding with molds, improving the seismic rating by 1-2 levels compared to traditional brick-concrete structures (meeting seismic fortification requirements of intensity 8).

Modular Design: Integration of Function and Performance

Prefabricated houses adopt modular design, integrating structural, piping, insulation, and other functions into a single component:

• Embedded water and electricity piping: During the casting stage, PVC pipes, electrical boxes, etc., are embedded in the concrete to avoid structural damage from later trenching and improve construction efficiency (reducing water and electricity installation time by 60%).
• Integrated insulation layer: EPS boards (thickness 50-100mm) are used as exterior wall insulation layers, fixed in the concrete with steel bars to form an integrated "structure-insulation-protection" wall, achieving national energy-saving standards for thermal performance (heat transfer coefficient ≤ 0.5W/(㎡·K)).
• Waterproof testing: Before leaving the factory, 48-hour closed water tests are conducted on roofs, bathrooms, and other areas to ensure no leakage, solving the node waterproofing challenges of traditional prefabricated buildings.

Construction Points: Standardization and Precision

The key to constructing prefabricated houses lies in the precise installation of components:

• Foundation treatment: Reinforced concrete strip foundations or independent foundations must be used to ensure connection strength with prefabricated components (anchor steel bar diameter ≥ 12mm, embedment depth ≥ 500mm).
• Node connections: Columns and beams, beams and floor slabs are connected using high-strength bolts or welding. The connection areas must be coated with structural adhesive to enhance bonding strength, and shear keys must be set to prevent slippage.
• Lifting sequence: Following the principle of "columns first, then beams; lower parts first, then upper parts", segmented lifting is performed using truck cranes, with single component weights controlled within 5 tons to fit common transport vehicles.

For detailed structural diagrams, it is recommended to contact professional manufacturers such as Huacheng Concrete House Factory, providing parameters such as house dimensions and load requirements for custom design to ensure structural safety and functional suitability.