How to Reinforce Prefabricated Panel Houses

The reinforcement of prefabricated panel houses should be based on the structural characteristics and actual needs of the house, with common reinforcement methods as follows:

1. Foundation Reinforcement

Increase the load-bearing capacity of the foundation by expanding its size, deepening its depth, or adding steel reinforcement mesh. Reinforcing agents or sealing materials can be added to enhance seismic performance, especially suitable for houses with foundation settlement or insufficient load-bearing capacity.

2. Structural Reinforcement

Install steel beams, columns, or plates at key locations such as walls, stairs, and roofs to enhance overall strength and stiffness. Reinforce seismic capacity by injecting reinforced concrete into the walls. For example, adding steel reinforcement mesh and pouring concrete into load-bearing walls can effectively resist horizontal seismic forces.

3. Frame Reinforcement

Install metal frames on the exterior walls of the house to form an overall support structure, improving stability. The frames can be filled with reinforcing agents or sealing materials to further enhance seismic performance. This method is suitable for houses with aging exterior walls or loose structures.

4. Seismic Isolation Reinforcement

Install seismic isolation devices, such as springs or rubber isolators, in the foundation or structure to reduce the transmission of seismic energy. These devices can lower both horizontal and vertical seismic forces, significantly reducing house vibrations, and are suitable for earthquake-prone areas.

5. Floor Reinforcement

1. Section Increase Method: Add a reinforced concrete layer not less than 40 millimeters thick to the surface and bottom of the prefabricated floor to enhance load-bearing capacity.
2. Carbon Fiber Sheet Reinforcement: Adhere carbon fiber sheets along the tensile direction of the floor, with anchor points set at the top, to enhance the floor's flexural capacity through high-strength fibers.
3. Steel Plate Adhesion Method: Adhere steel plates to the surface of flexural members, but note that the steel plates are prone to peeling from the concrete and require professional anchoring measures.

6. Wall Reinforcement

1. Grouting Reinforcement: Inject cement-based grout into wall cracks or the foundation to fill voids and enhance overall integrity, preventing deformation.
2. Steel Reinforcement Mesh Reinforcement: Lay a steel reinforcement mesh on the wall surface and spray concrete to form a composite structure, improving seismic performance.
3. Steel Plate Adhesion Reinforcement: Adhere steel plates to cracked walls and fix them with structural adhesive to restore or enhance load-bearing capacity.

7. Bracing Reinforcement

Add diagonal braces, steel structural collars, and other support structures to walls or roofs to distribute loads and improve stability. For example, adding steel column supports in rooms with large spans can effectively reduce floor deformation.

Construction Precautions:

• When adhering carbon fiber sheets or steel plates, ensure the surface is clean, the adhesive is applied evenly, and reliable anchoring is provided.
• After reinforcement, conduct quality inspections such as ultrasonic testing or radiographic testing to ensure the reinforcement effect meets standards.