Prefabricated Panel House Construction Process
The construction process of prefabricated panel houses includes five core stages: design and approval, foundation construction and soil investigation, prefabricated panel manufacturing, on-site assembly, and subsequent procedures.
Design and Approval is the prerequisite for construction. First, housing construction approval must be obtained to ensure compliance with national regulations regarding area and floor height. Subsequently, a professional designer formulates an overall plan covering spatial layout, steel reinforcement ratios, structural specifications, etc., and produces detailed construction drawings. This stage requires strict adherence to standards to avoid potential safety hazards caused by design flaws.
Foundation Construction and Soil Investigation involves selecting the appropriate foundation type based on the soil conditions of the residential site, such as strip foundations, raft foundations, or pile foundations, to prevent foundation settlement or cracking. During construction, concealed works like sewage pipe embedding must be pre-installed, with attention to the sequence: first complete foundation backfilling and compaction, then excavate trenches for pipe installation to avoid pipe damage from backfill vibration. The accuracy of soil investigation directly affects foundation stability and is crucial for ensuring housing safety.
Prefabricated Panel Manufacturing is the core of factory-standardized production. First, steel molds are fabricated and coated with release agents; then, steel reinforcement is arranged, and the reinforcement is pre-tensioned to the design strength using the pre-tensioning method. After concrete pouring, the reinforcement contracts to form prestress, enhancing tensile strength. Some prefabricated panels adopt a hollow design, filled with foam boards to reduce weight, provide sound insulation, or reserve space for pipelines. During pouring, vibrating rods are used to eliminate air bubbles. Finally, the concrete is hardened through high-temperature steam curing or natural curing and cut into standard modules using CNC electric saws. The precision of this stage directly impacts assembly quality.
On-site Assembly involves transporting prefabricated modules (such as ceilings, walls, and floors) to the construction site and assembling them precisely according to labeled information (such as project name, model, and production date), with installation accuracy controlled to the millimeter level. The modular assembly method, similar to “building blocks,” significantly shortens the construction period by more than 60% compared to traditional construction methods while reducing noise and dust pollution.
Subsequent Procedures include pressure testing after the installation of water and electricity pipelines to confirm no leaks before tile laying, avoiding rework. This stage requires strict inspection to ensure the quality of concealed works and prevent increased maintenance costs later.
Prefabricated panel house construction achieves efficient and environmentally friendly construction goals through the combination of factory-standardized production and rapid on-site assembly. However, it is essential to strictly follow preliminary stages such as design, approval, and soil investigation; otherwise, maintenance costs may increase, or even safety hazards may arise.
