Prefabricated Panel House Installation

Prefabricated panel house installation is completed through factory-prefabricated modules and on-site assembly, with core processes including positioning, lifting, assembly, and quality control. The technology has evolved from historical development to form a modern system.

I. Core Steps in the Installation Process

1. Positioning and Elevation Control
   Control lines and elevation reference lines must be set up in advance at the construction site to ensure the installation accuracy of components. For example, when installing prefabricated bay windows, the horizontal position must be adjusted by regulating the elevation control bolts to avoid structural misalignment caused by uneven ground. This step serves as the foundation for subsequent lifting and assembly, directly affecting the overall stability of the house.

2. Temporary Positioning and Lifting
   Temporary positioning adjustment components must be fixed on the lower-level structure before installation to provide support for upper-level components. During lifting, tower cranes should be used to slowly lift prefabricated components (such as bay windows and composite slabs). The lifting equipment must ensure that all lifting points are subjected to synchronized force to prevent deformation or fracture of components due to uneven force. For example, when lifting composite slabs, a dedicated lifting frame must be used to ensure slab flatness.

3. Modular Assembly
   Assembly methods should be selected based on the building type:

   • Panel Buildings: Prefabricated exterior facades, floor slabs, and other modules are spliced together, with nodes fixed by bolts or welding;
   • Box Buildings: Independent single rooms containing hard finishes (such as walls and floors) are directly assembled, shortening the construction period;
   • Skeleton-Panel Buildings: The main skeleton (such as steel beams and columns) is first assembled, then reinforced at load-bearing nodes, and finally, prefabricated wall panels are installed.

4. Safety and Quality Control
   The stability of lifting equipment must be checked before lifting to avoid using aged or damaged lifting ropes. Components must be protected from collisions during transportation and stacking to prevent cracks or distortions. During construction, safety regulations must be strictly followed, such as workers wearing safety harnesses and protective nets being set up in high-altitude work areas.

II. Historical Development of the Technology

The installation technology for prefabricated panel houses originated from the wooden structure splicing in the American colonial period in the 17th century, which improved construction efficiency through standardized components. After World War II, due to the demand for post-war reconstruction, European countries widely adopted prefabricated concrete technology, driving the rapid development of prefabricated buildings. Modern technology now covers five major categories: block buildings (such as small concrete blocks), lift-slab and lift-floor buildings (where floor slabs are lifted hydraulically), box buildings (fully modular), etc., forming a complete technological system.