Prefabricated House Construction Technology
Prefabricated house construction technology mainly includes two core processes: factory prefabrication and on-site assembly, achieving efficient construction through modular production and standardized assembly.
The factory prefabrication process is the core foundation of prefabricated houses, focusing on breaking down building components into standardized modules and completing high-precision manufacturing in the factory. First, components such as ceilings, walls, and bathroom waterproof layers are produced on factory assembly lines. Some scattered parts (such as prefabricated beams, slabs, walls, and columns) are processed separately on different floors and then assembled using highly automated equipment like welding robots at the final assembly station, with error control precision reaching the millimeter level to ensure the standardization and interchangeability of component dimensions. The technical system covers prefabricated concrete structures and steel structures. Among them, the production of prefabricated slabs adopts a process of nailing wooden models, laying out steel bars, and pouring cement, which is divided into two types: solid and hollow. The hollow structure achieves lightweighting by reducing non-load-bearing concrete, reducing both material consumption and transportation burden. The advantage of the factory prefabrication process lies in its controllable environment, avoiding the impact of weather and labor factors on traditional on-site construction, while improving the quality stability of components through large-scale production.
The on-site assembly process is a key step in the implementation of prefabricated houses, focusing on transporting the modules produced in the factory to the construction site for efficient assembly. When transporting prefabricated modules, detailed 'ID card' information, including project name, product model, and production date, needs to be marked for construction management and quality traceability. The assembly process is similar to 'building blocks', with modules precisely hoisted to designated positions using lifting equipment. In some projects, more than 80% of the construction processes are completed in the factory, and only on-site casting operations (such as concrete pouring or steel structure welding) at module connections are required, further shortening the construction period. The standardized process of on-site assembly significantly reduces wet operations (such as bricklaying and plastering) in traditional construction, reducing dust and noise pollution, while the modular design facilitates later maintenance and renovation.
Compared with traditional construction techniques, prefabricated house construction technology has significant advantages such as short construction period, controllable quality, energy conservation and environmental protection, and easy maintenance: parallel operations of factory prefabrication and on-site assembly can shorten the construction period by 30%-50%; standardized production and automated equipment ensure component precision and reduce common quality issues; modular design reduces material waste and lowers construction waste emissions; independent modules facilitate later replacement or upgrading, extending the service life of the building.
