The Entire Construction Process of Prefabricated Panel Houses

The entire construction process of prefabricated panel houses consists of two core stages: prefabricated panel manufacturing and on-site assembly. Combining industrial production with modular assembly technology, it offers advantages such as short construction periods, environmental friendliness, and controllable quality.

I. Prefabricated Panel Manufacturing: Standardized Production in Factories

1. Mold Preparation and Steel Reinforcement Framework Installation Workers use steel plates to form molds and spray mold release agents to prevent concrete adhesion. Subsequently, distribution bars and load-bearing bars (steel strands) are laid. The latter are pre-tensioned to their ultimate strength using the "pre-tensioning method" and then fixed to ensure structural load-bearing capacity.

2. Foam Board Installation and Hollow Structure Formation A large foam board with a thickness of up to 15 centimeters, accounting for half of the prefabricated panel's volume, is placed in the mold and secured with iron hooks to maintain its shape. The foam board not only reduces weight but also forms a hollow cavity for later cable routing and sewage pipe installation.

3. Concrete Pouring, Curing, and Cutting After pouring the second layer of concrete, a vibrating rod is used to eliminate air bubbles and ensure density. The prefabricated panels are then sent to a steam curing chamber for four hours of high-temperature curing to rapidly harden the concrete. After curing, an angle grinder or CNC electric saw is used to cut excess steel bars, forming a standardized hollow structure and completing the production of the prefabricated panels.

II. On-Site Assembly: Modular and Efficient Construction

1. Modular Transportation and Precise Installation Prefabricated panels (including ceilings, walls, water and electricity pipelines, etc.) are manufactured in the factory and then transported to the construction site. They are assembled according to the design using equipment such as tower cranes. Each panel is labeled with the project name, model, and production date to ensure precise installation and avoid errors.

2. Cast-in-Place Connections to Enhance Stability For some projects, cast-in-place concrete is applied at the connections between prefabricated panels on-site to form an integral structure, enhancing seismic resistance and stability. For example, cast-in-place technology is used at beam-column joints or floor slab seams to ensure that modular buildings achieve the same level of safety as traditional buildings.

III. Advantages and Characteristics: Combining Industrialization and Green Construction

1. Construction Period Reduced by Over 60% Parallel operations in the factory and on-site assembly are carried out simultaneously, significantly shortening the construction period. For example, a certain affordable housing project was shortened from the traditional 2.5-3 years to 1 year.

2. Environmentally Friendly and Energy-Efficient, Reducing Pollution On-site operations are reduced by 80%, significantly lowering noise, dust, and construction waste, and meeting green building standards.

3. Controllable Quality with Millimeter-Level Precision Factory automation production and standardized processes ensure component precision, with errors controlled to the millimeter level, improving the overall quality of the building.

The construction of prefabricated panel houses, through the "factory manufacturing + on-site assembly" model, achieves the integration of building industrialization and efficient construction, providing a sustainable solution for modern architecture.