How to Connect Prefabricated Houses

The connections of prefabricated houses mainly include the connections between prefabricated floor slabs and supporting structures, as well as the connections between the ends of prefabricated slabs and horizontal joints. Here is a detailed introduction:

Connections between Prefabricated Floor Slabs and Supporting Structures

The common connection methods between prefabricated double-T slabs and prestressed concrete hollow slabs and supporting structures mainly involve dry connections such as welding and bolt connections. Depending on the cross-sectional configuration at the ends of the double-T slabs, the connections can be classified into the following types:

• Slab Rib Bottom Connection: 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. This connection method utilizes the high strength and stability of welding, enabling a tight combination between the double-T slabs and the supporting beams and effectively transferring loads. During the welding process, it is necessary to strictly follow the welding process requirements to ensure welding quality and avoid welding defects that may affect connection performance.
• Tongue-and-Groove Connection: The tongue-and-groove connection is a relatively special connection method. It achieves the connection between the double-T slabs and the supporting structures by setting interlocking tongue-and-groove elements on both. The design of the tongue-and-groove elements can increase the contact area of the connection, improve the stability and shear resistance of the connection, and also prevent horizontal displacement of the double-T slabs to a certain extent.
• Steel Embedded Connector Connection: Embedded steel components are installed at the top of the supporting beams, and steel pipes are embedded at the bottom of the double-T slab ribs. The embedded steel components are connected through bolts. This connection method has advantages such as easy installation and disassembly, facilitating construction and subsequent maintenance and replacement. During installation, it is necessary to ensure that the tightening torque of the bolts meets the design requirements to ensure connection reliability.

Connections between the Ends of Prefabricated Slabs and Horizontal 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. In actual engineering projects, the connections between the ends of prefabricated slabs and horizontal joints need to consider factors such as the overall structural integrity and waterproofing performance. Special connection structures and materials are usually adopted, such as setting steel bar connections and using sealants for sealing, to ensure the strength and durability of the joints and prevent problems such as cracks and leakage.