Prefabricated House Connections

The connections of prefabricated houses mainly involve the connections between prefabricated floor slabs and supporting structures, as well as the connections between the ends of prefabricated slabs and transverse joints. Details are as follows:

Connections between Prefabricated Floor Slabs and Supporting Structures

The common connection methods for prefabricated double-T slabs and prestressed concrete hollow slabs with supporting structures mainly involve dry connection methods such as welding and bolt connections.

• Connection methods for double-T slabs: Depending on the different end cross-sectional configurations, they can be classified into various types.
  • Rib-bottom connections: Corresponding embedded steel plates are installed at the bottom of the double-T slab ribs and the top of the supporting beams. The embedded steel components are connected through welding or bolts. This connection method ensures a reliable connection between the double-T slab and the supporting beam, enabling them to share loads and enhancing the overall integrity and stability of the structure. For example, in the construction of some industrial plants, double-T slabs with rib-bottom connections can effectively transfer loads to the supporting beams, meeting the structural requirements.
  • Tongue-and-groove connections: The tongue-and-groove shape at the end of the double-T slab is used to connect with the supporting structure. This connection method can increase the tightness and stability of the connection to a certain extent, reducing structural deformation and displacement.
  • Steel embedded connector connections: Double-T slabs are connected to the supporting structure using steel embedded connectors. This method has advantages such as high connection strength and convenient construction, making it suitable for occasions with high structural connection requirements.
• Connections of prestressed concrete hollow slabs: These slabs are usually also connected to the supporting structure using dry connection methods such as welding or bolt connections, ensuring that the hollow slabs can be stably placed on the supporting structure and effectively transfer loads.

Connections between the Ends of Prefabricated Slabs and Transverse Joints

According to the "Atlas of Prestressed Concrete Circular Hollow Slabs" 03SG435-1, there are corresponding connection methods, but the specific practices are not detailed in the search results. However, in actual engineering, the connections between the ends of prefabricated slabs and transverse joints need to ensure the strength and tightness of the joints to prevent problems such as cracks and leakage, which can affect the normal use and durability of the structure. Generally, special connection materials and structural measures are adopted, such as using high-strength grout to fill the joints or installing steel bars at the joints to improve the load-bearing capacity and crack resistance of the joints.