Prefabricated Assembly of Building Walls

Prefabricated assembly of building walls is a form of prefabricated construction, referring to the construction method of producing building components (such as wall panels, beams, columns, etc.) through industrialization and assembling them on-site. Its core types, technical advantages, typical applications, and market development are as follows:

I. Core Types

1. Panel Prefabrication: Using prefabricated wall panels and floor slabs as core components, the building main body is formed through on-site assembly. For example, prefabricated wall panels can expand usable area, but design flexibility is limited, making them suitable for standardized residential or factory construction.
2. Box Prefabrication: Prefabricated functional units (such as kitchens and bathrooms) are assembled into complete spaces in factories and then rapidly constructed on-site through modular assembly. Construction speed can be increased by 50%-70%, but higher requirements are placed on transportation and lifting equipment, making them mostly used for temporary buildings or emergency projects.
3. Frame Prefabrication: Prefabricated concrete or steel frame structures are used, combined with prefabricated wall panels, floor slabs, and other components for assembly. For example, the Nanjing Jindi Yufang project adopts a prestressed prefabricated concrete assembled integral frame structure system, combining structural stability with construction efficiency.

II. Technical Advantages

• Shortened Construction Period: Industrial production of prefabricated components significantly improves on-site construction efficiency, especially suitable for harsh environments such as high altitudes and cold regions.
• Environmental Protection and Energy Efficiency: Reduces construction waste, with Fujian Province achieving over 70% waste reduction through policy support, aligning with the trend of green building development.
• Quality Control: Standardized factory production improves component precision, reduces on-site construction errors, and extends building service life.
• Strong Adaptability: Can be extended to special environments, such as prefabricated fences using cup foundations, ground beams, and other components for rapid assembly, meeting diverse needs.

III. Typical Applications

• Prefabricated Fences: Factory-prefabricated from materials such as cement and magnesium chloride, assembled on-site with embedded parts, columns, and bottom beams, with a compressive strength of 21.3~31.0 Mpa, supporting various decorative styles, and being reusable with short construction periods.
• Residential and Factory Buildings: Since the 1950s, China has applied prefabricated concrete technology to factory and residential construction, with a revival and promotion to prefabricated shear wall residential structural systems in the 21st century, improving living quality.

IV. Market Development
China's prefabricated housing technology has matured, with products selling well overseas. According to customs data, in the first four months of 2026, the Guangzhou Customs district exported movable houses worth 1.4 billion yuan, a year-on-year increase of 38.1%, indicating sustained growth in international demand for prefabricated buildings.