Prefabricated Housing Assembly Process
The prefabricated housing assembly process mainly includes four core steps: architectural decomposition and module design, factory prefabrication, on-site assembly construction, and quality and precision control.
Architectural decomposition and module design is the foundational step in the prefabrication of housing. The design team needs to decompose the entire building into independent functional modules, such as ceilings, walls, floors, stairs, and water and electricity pipelines. Each module must undergo detailed design in the factory. During the design process, strict attention must be paid to details; for example, the positioning error of steel bars must be controlled to within millimeters to ensure the standardization and compatibility of modules. Module design must take into account structural safety, functional requirements, and transportation constraints. For instance, some large modules need to be designed as detachable structures to facilitate subsequent transportation and on-site assembly.
Factory prefabrication is the core manufacturing stage. The factory completes the mass production of modules through assembly line operations, including processes such as concrete pouring, steel bar tying, and waterproof layer construction. For example, wall modules need to have water and electricity pipeline interfaces pre-embedded, and bathroom modules need to have waterproof layers and tile installations completed. During production, a parallel operation mode is adopted, where different components are produced simultaneously and then assembled using automated equipment, significantly shortening the production cycle. Some complex modules, such as prefabricated bay windows, require staged processing, with the pre-embedding of connecting pieces between the window frame and the wall completed first, followed by assembly with the main structure.
On-site assembly construction is the crucial step for module installation. After being transported to the construction site by vehicles, prefabricated modules need to be precisely lifted using equipment such as tower cranes. Taking the installation of a prefabricated bay window as an example, processes such as setting out and positioning, wall and column steel bar tying, aluminum formwork sealing, floor slab bottom steel bar tying, water and electricity pipeline reservation and embedding, and floor slab concrete pouring need to be completed sequentially to ensure a firm connection between the window and the main structure. The installation process for prefabricated balconies is similar, but additional attention must be paid to strengthening the steel bar welding and concrete pouring quality at the joints. During assembly, strict adherence to the design drawings is required to avoid error accumulation due to on-site adjustments.
Quality and precision control runs throughout the entire process. Each module is equipped with a unique 'ID card' that records key information such as the project name, product model, and production date, enabling quality traceability. During the factory production stage, industrial standard testing equipment is used to monitor parameters such as module dimensions, steel bar spacing, and concrete strength in real-time. During the on-site assembly stage, tools such as laser positioning devices and total stations are used to ensure module installation accuracy and reduce human errors. Additionally, video footage of the entire construction process must be retained to provide a basis for subsequent acceptance and maintenance.
