Prefabricated Assembly House Construction
The construction of prefabricated assembly houses adopts a modular building model, completed through a combination of factory prefabrication and on-site assembly, featuring efficiency, environmental friendliness, and precision.
Factory Prefabrication: Standardized Production of Core Components
Components such as ceilings, floors, walls, plumbing and electrical systems, and bathroom waterproofing layers are all prefabricated on factory assembly lines. Some components are assembled using highly automated equipment, such as welding robots for structural connections, ensuring production precision and efficiency. The controlled factory environment avoids weather-related disruptions to construction and reduces costs through mass production. During prefabrication, each component is attached with a detailed 'ID card' recording project name, product model, production date, and other information, providing a basis for subsequent assembly and quality traceability.
On-Site Assembly: Modular Rapid Construction
Prefabricated modules are transported to the construction site by vehicles and assembled using equipment such as tower cranes. The assembly process resembles 'building with blocks,' with modules precisely connected through pre-set interfaces. For example, a public housing project in Shenzhen, Guangdong, was assembled from 6,028 concrete modules, with a 70-square-meter unit requiring only two and a half modules; the fully assembled rural house in Jiangbei, Ningbo, had its main structure assembled in just seven days. This model significantly shortens the construction period, with the Shenzhen project's completion and delivery time reduced from 2.5-3 years under traditional methods to just one year.
Connection Methods: Combining Mechanical and Cast-in-Place Techniques
Most prefabricated components are plate-like structures primarily connected using mechanical bolts, ensuring ease of installation and disassembly. For critical load-bearing areas or regions requiring high structural stability, some use cast-in-place connection techniques, enhancing overall integrity through concrete pouring. This 'dry-wet combination' connection method balances construction efficiency with structural safety.
Technical Features: Precision, Efficiency, and Environmental Friendliness
Error control is measured in millimeters during the design phase, ensuring tight module connections. The construction period is reduced by over 60% compared to traditional buildings, with on-site labor reduced by about 50%, while significantly lowering noise, dust, and construction waste. For example, traditional construction sites require long-term material storage, whereas prefabricated assembly houses only need temporary module storage, reducing traffic congestion and site occupation. Additionally, factory prefabrication reduces on-site wet work, favoring energy conservation, emission reduction, and resource recycling.
Prefabricated assembly houses, through modular design, industrialized production, and assembly-based construction, have achieved transformation and upgrading in the construction industry, providing efficient and sustainable solutions for public housing, rural houses, and commercial buildings.
