Prefabricated Quick-Assembly Housing

Prefabricated quick-assembly housing is a construction model that breaks down buildings into independent modules, which are prefabricated in factories and then transported to the site for assembly. It offers advantages such as short construction periods, controllable quality, and energy conservation and environmental protection.

Technical Principles and Structural Types

Prefabricated quick-assembly housing decomposes buildings into independent components such as ceilings, floors, beams, slabs, walls, and columns through modular design. These components undergo concrete pouring, pre-embedding of water and electricity pipelines, and other processes on factory assembly lines to form standardized modules, which are then transported to the construction site. Its technical types include prefabricated concrete structures and steel structures, with modular buildings representing a more integrated model that can achieve a prefabrication and assembly rate of over 90%. For example, the earthquake-recoverable quick-assembly multi-story and high-rise prefabricated steel structure system simplifies component installation and significantly shortens the construction period through standardized design.

Core Advantages

1. Optimization of Construction Period and Cost
   The parallel operation of factory prefabrication and on-site assembly significantly shortens the construction period. Taking the affordable housing project in Shenzhen, Guangdong, as an example, five residential buildings nearly 100 meters high were assembled using 6,028 concrete modules. The completion time was compressed from 2.5-3 years with traditional methods to 1 year, with a reduction in on-site labor by approximately 50%. Additionally, it reduces noise, dust pollution, and alleviates traffic pressure.

2. Enhancement of Quality and Environmental Protection
   The factory environment is strictly controlled, ensuring millimeter-level precision of components and avoiding on-site construction errors. Standardized production reduces material waste, and the steel structure system has a recycling rate of over 90%, meeting green building standards. For example, the prefabricated steel structure system reduces energy consumption through lightweight design and decreases construction waste by more than 60%.

3. Improved Maintenance and Adaptability
   Modular design facilitates later renovation and maintenance, allowing for quick replacement of damaged individual components. The steel structure system offers excellent seismic performance, making it suitable for earthquake-prone areas, and can be paired with intelligent monitoring systems for full lifecycle management.

Development History and Application Status

China's prefabricated concrete technology originated in the 1950s and was initially used for factory and residential construction. It experienced a resurgence in the 21st century due to environmental protection demands. Enterprises have developed technologies such as prefabricated shear wall residential structural systems and prefabricated frame technologies, driving technological iterations. Currently, Chinese-made prefabricated houses have been exported globally, with the Guangzhou Customs District exporting 1.4 billion yuan worth of portable houses in the first four months of 2026, a year-on-year increase of 38.1%, demonstrating strong international market competitiveness.