Rapid Construction of Prefabricated Houses
Rapid construction of prefabricated houses typically adopts a modular construction model, achieving efficient construction through a combination of factory prefabrication and on-site assembly. Its core principle involves breaking down the building into independent modules, completing standardized production in the factory, and then transporting them to the site for assembly. By integrating technological optimization and process innovation, the construction period is significantly shortened. Specific characteristics are as follows:
1. Modular Design and Factory Prefabrication
Prefabricated houses decompose the building into independent modules such as ceilings, floors, walls, and plumbing and electrical systems, which are prefabricated on automated production lines in the factory. For example, the affordable housing project in Shenzhen, Guangdong, uses 6,028 concrete modules for assembly, with a 70-square-meter unit requiring only two and a half modules to complete the main structure. The factory environment allows for precise control of steel bar positioning accuracy to the millimeter level and ensures component quality through intelligent warehouse management, avoiding the cumulative errors of traditional on-site construction. Some projects adopt new materials such as stainless steel core panels, like the "Living Building" technology of Broad Group, which makes the building 10 times lighter than concrete while ensuring it only deforms but does not collapse during strong earthquakes.
2. On-site Assembly and Parallel Operations
After being transported to the site, the modules are quickly assembled using methods such as mortise-and-tenon joints, bolt connections, or ground plate fixation. Rural prefabricated houses in South Korea use 5-ton prefabricated foundation piles, combined with mortise-and-tenon joints for beams, allowing the main structure to be completed in just 14 days. Foldable prefabricated houses further simplify the process; after interior decoration and system integration are completed in the factory, they can be unfolded on-site and connected to utilities for immediate occupancy. Through parallel operation modes, some projects have reduced the project completion and delivery period from the traditional 2.5-3 years to 1 year, with a reduction in on-site labor by approximately 50%.
3. Technological Support and Quality Assurance
Modular construction relies on high-precision manufacturing technologies, such as automated vertical warehouses for rapid component retrieval and intelligent production lines to ensure module dimensional consistency. The application of new materials also enhances building performance; for example, stainless steel core panels not only reduce weight but also increase impact resistance through their honeycomb structure. Additionally, the factory prefabrication environment avoids the impact of weather on construction, further ensuring the stability of the construction period.
Prefabricated houses achieve a balance between construction speed and structural safety through modular design, factory prefabrication, efficient on-site assembly, and technological innovation, becoming an important direction for modern building industrialization.
