Prefabricated House Production

Prefabricated house production involves disassembling a building into independent modules, prefabricating them in a factory, and then transporting them to the site for assembly. The core processes include modular design, factory prefabrication, on-site assembly, and foundation treatment. The specific procedures are as follows:

1. Modular Design and Factory Prefabrication
Prefabricated houses require the building to be divided into independent modules such as ceilings, floors, walls, and plumbing and electrical systems, which are then manufactured on factory assembly lines. For example, at the China Construction Hailong Intelligent Construction Industrial Park in Shenzhen, Guangdong, the ceilings, walls, and bathroom waterproof layers of houses are all fabricated in the factory. Scattered components are first produced separately on different floors and then assembled into modules using a general assembly platform. The position of each steel bar needs to be precisely located to the millimeter to ensure that the structural strength of the modules meets standards. The factory employs automated vertical warehouses and intelligent production lines to achieve parallel operations, significantly improving efficiency. Compared to traditional construction methods, the construction period for modular buildings can be shortened by more than 60%.

2. On-site Assembly and Label Management
After the prefabricated modules are transported to the construction site, they are assembled using equipment such as tower cranes. For example, at a real estate development site in Shanghai, each module is labeled with information such as the project name, product model, and production date to facilitate construction management and quality traceability. The assembly process is similar to “building with blocks,” requiring precise alignment of module interfaces. Some designs adopt detachable structures, such as container houses, which connect the bottom frame, columns, and top structure with bolts and reserve positions for window and door installations, facilitating later renovations or relocations.

3. Foundation Treatment and Structural Connection
Foundation treatment is crucial for the stability of prefabricated houses. For example, in the construction of prefabricated houses in rural areas of South Korea, after excavation, plastic sheets are laid to prevent moisture loss, and 5-ton prefabricated foundation piles are installed, which are quickly connected using horizontal beam mortise-and-tenon joints. After the stairs are hoisted, a 5-centimeter-thick floor slab is laid, and finally, the gaps between components are grouted to ensure the overall structural tightness and load-bearing capacity. The application of mortise-and-tenon joints, bolt connections, and other techniques not only improves construction efficiency but also ensures structural safety.

4. Technical Advantages and Application Scenarios
Prefabricated house production reduces on-site work through factory production, minimizes the impact of weather on construction, and simultaneously reduces construction waste and dust pollution. Its application scenarios are extensive, including residential housing, temporary buildings, and post-disaster reconstruction. For example, container houses, due to their modular and movable characteristics, are often used for emergency shelter or tourism and vacation scenarios; while high-rise modular buildings meet rapid development needs through standardized design.