How Are Prefabricated Houses Joined Together?

There are various methods for joining prefabricated houses, including modular joining, nut tightening and fixing, metal connector fixing, reserved rebar port docking, as well as gap grouting and secondary pouring.

1. Modular Joining: This is a relatively common and efficient method for joining prefabricated houses. The building is disassembled into multiple independent modules, such as ceilings, floors, walls, and water and electricity pipelines, all of which are manufactured on factory assembly lines. Factory production is characterized by standardization and normalization, ensuring the quality and precision of each module. After manufacturing, the modules are transported to the construction site and assembled like building blocks. This approach significantly shortens the construction period, reduces the complexity and uncertainty of on-site construction, and also helps improve the overall quality of the building.
2. Nut Tightening and Fixing: During the joining process, workers first adjust the horizontal position of the prefabricated components to ensure the accuracy and stability of the joining. For example, when a prefabricated foundation pile lands on a footplate, nuts are used to tighten and fix it; similarly, when a prefabricated beam is adjusted horizontally, nut tightening and fixing are also employed. This method is relatively simple to operate, enabling quick connection and fixation of components, and is suitable for scenarios where the connection strength requirement is not particularly high but rapid installation is needed.
3. Metal Connector Fixing: Metal connectors play a crucial role in constructing the house chassis frame. They can firmly lock each node, ensuring the stability of the entire platform. Metal connectors have advantages such as high strength and good durability, enabling them to withstand significant loads and stresses, providing reliable protection for the structural safety of the house.
4. Reserved Rebar Port Docking: For joining key parts such as load-bearing columns and beams, reserved rebar port docking is a commonly used method. The load-bearing column is precisely inserted into the reserved rebar port and then docked and fixed. This method effectively transfers loads, enhances the overall integrity and stability of the structure, and ensures that the house will not be damaged when subjected to various external forces.
5. Gap Grouting and Secondary Pouring: After joining is completed, to further enhance the overall integrity and stability of the structure, all gaps need to be grouted and reinforced with steel mesh for secondary concrete pouring. Grouting fills the gaps, preventing the entry of moisture and air, improving the sealing and durability of the structure; secondary concrete pouring tightly connects the various prefabricated components into a whole, improving the seismic performance and load-bearing capacity of the house.