Reinforcement Methods for Prefabricated Block Houses

Reinforcement methods for prefabricated block (panel) houses mainly include foundation reinforcement, structural reinforcement, frame reinforcement, seismic isolation reinforcement, steel reinforcement, floor reinforcement, and additional support reinforcement, as detailed below:

Foundation Reinforcement: By increasing the foundation size, deepening the foundation, or adding steel reinforcement mesh, the bearing capacity of the foundation can be significantly improved. Additionally, incorporating reinforcement agents or foundation sealing materials can enhance the foundation's seismic resistance, particularly suitable for areas with poor geological conditions or high earthquake risk.

Structural Reinforcement:

• Installing steel beams, columns, or plates at key locations such as walls, stairs, and roofs can enhance the overall strength and stiffness of the house.
• Injecting reinforced concrete into the walls can improve their seismic resistance, suitable for situations where the walls are aging or have insufficient load-bearing capacity.
• Grouting reinforcement involves injecting grout into walls or foundations to fill voids and improve overall stability; steel reinforcement mesh reinforcement involves laying steel mesh on the surface of walls or floors to enhance their crack resistance.
• Steel plate bonding reinforcement is applicable when cracks or deformations occur in walls or floors, improving load-bearing capacity by bonding steel plates.

Frame Reinforcement: Adding metal frames to the exterior walls of the house can enhance overall stability. Incorporating reinforcement agents or sealing materials into the frame structure can further improve seismic resistance, particularly suitable for multi-story prefabricated panel houses.

Seismic Isolation Reinforcement: Installing spring isolators, rubber isolators, or other devices in the foundation or structure can effectively reduce the impact of earthquakes on buildings. These devices significantly reduce building vibrations and protect structural safety by lowering the horizontal and vertical seismic forces generated by earthquakes.

Steel Reinforcement: Adding steel reinforcement at key locations such as walls, stairs, and beams can enhance the overall strength and stability of the house. This method is suitable for situations with insufficient local load-bearing capacity or structural aging.

Floor Reinforcement:

• Increasing the floor section: Adding reinforced concrete with a thickness of not less than 40 millimeters to the surface and bottom of the prefabricated floor can improve its load-bearing capacity.
• Bonding carbon fiber sheets: Bonding carbon fiber sheets along the direction of the floor to the tensioned areas and setting anchor points can enhance the floor's flexural resistance.
• Hole reinforcement: If the hole is located in the middle of the span, equal-strength carbon fiber sheets should be bonded on both sides and at the ends of the hole to supplement the flexural load-bearing capacity; if located at the edge of the support, polymer mortar should be filled to compensate for the shear load-bearing capacity.

Additional Support Reinforcement Method: Reinforcing walls or roofs by adding support structures can effectively improve the load-bearing capacity and stability of the building, preventing deformation or crack propagation. This method is suitable for situations with insufficient structural integrity or localized stress concentration.