Construction Process of Prefabricated Panel Houses

The construction process of prefabricated panel houses mainly consists of two modes: modular construction based on concrete prefabricated panels and rapid construction based on lightweight prefabricated panels, both centered around standardized factory production and efficient on-site assembly.

I. Modular Construction Process Based on Concrete Prefabricated Panels

1. Factory Prefabrication Stage The building is disassembled into independent modules (such as ceilings, walls, floors, etc.), which are manufactured on factory assembly lines. The modules integrate infrastructure such as water and electricity pipelines and waterproof layers. Automated welding manipulators and high-precision positioning technologies are used to ensure manufacturing errors are controlled within millimeters. Each module is attached with a unique identification 'ID card' indicating the project name, model, and production date, facilitating subsequent on-site assembly management. This stage achieves standardization and refinement through industrial production, reducing uncertainties in on-site construction.

2. On-site Assembly Stage Prefabricated modules are transported to the construction site using tower cranes and quickly assembled like building blocks. The modules are connected using cast-in-place connection techniques (such as concrete pouring or high-strength bolt fixation) to ensure structural integrity while reducing on-site labor by approximately 50%. The construction period is shortened by more than 60% compared to traditional buildings, and since most processes are completed in the factory, on-site noise, dust, and construction waste are significantly reduced, aligning with green building principles.

II. Rapid Construction Process Based on Lightweight Prefabricated Panels (Taking Wooden Houses as an Example)

1. Frame Construction Stage Lightweight prefabricated panels (such as wooden structural panels) are used to quickly construct the basic frame of the house, with reserved positions for doors and windows. The roof structure adopts a circular tray design, connected to the walls through square timbers to form a conical roof, ensuring structural stability while improving space utilization. This stage emphasizes the lightweight nature of materials and construction flexibility to meet rapid construction needs.

2. Sealing and Waterproofing Treatment The top closure is filled with foam boards, with gaps injected with foam agents and sealed with wooden boards. The edges are polished smooth to prevent water seepage. The exterior walls are covered with waterproof foam and tarpaulin, with detailed treatment at corners to extend service life; interior wall gaps are filled with sealant, acrylic panels are installed, and excess foam adhesive is cleaned to ensure airtightness and aesthetics.

3. Detail Refinement Stage An oval skylight frame is installed, and a top waterproof layer is laid to enhance lighting and rainproof performance; floor and wall foam boards are filled and cut to corresponding sizes to ensure fit, improving thermal insulation. This stage enhances house comfort and durability through refined treatment.

Both modes achieve efficient construction through a combination of factory prefabrication and on-site assembly, but modular construction focuses more on industrial integration and structural integrity, while lightweight prefabricated panel construction (such as wooden houses) emphasizes material lightness and construction flexibility, suitable for different scenarios.