Chaozhou Prefabricated Slab House Reinforcement

Chaozhou prefabricated slab house reinforcement can be achieved through various scientific methods, and the specific approach should be selected based on the structural issues of the house. The following are common reinforcement methods and their technical key points:

1. Foundation Grouting Reinforcement
For foundation subsidence or settlement issues, grouting technology is employed to inject cement-based or chemical grout into the foundation soil. This improves the foundation properties by filling voids, compacting the soil, and cementing particles. This method can effectively enhance the foundation bearing capacity, reduce the risk of uneven settlement, and is particularly suitable for soft soil foundations or filled soil areas. The grouting depth should be determined based on geological survey results, and during construction, the grouting pressure and flow rate should be controlled to avoid affecting surrounding buildings.

2. Carbon Fiber Reinforcement
Utilizing the high strength (tensile strength exceeding 3500 MPa) and lightweight properties of carbon fiber sheets (CFRP), they are adhered to the surfaces of beams, slabs, and columns using epoxy resin adhesive. Carbon fiber reinforcement can significantly enhance the flexural and shear bearing capacity of components while improving structural ductility, making it suitable for seismic reinforcement or repairing components with insufficient bearing capacity. During construction, ensure the base is flat and clean, the carbon fiber sheet is adhered in the same direction as the applied force, and proper fire and corrosion protection measures are taken.

3. Steel Plate Bonding Reinforcement
Steel plates (typically 4-10 mm thick) are bonded to the surface of components using structural adhesive (such as epoxy resin adhesive) to achieve collaborative work between the steel plate and concrete. This method can quickly increase the stiffness and bearing capacity of components, especially suitable for reinforcing large-span beams or columns with insufficient axial compression ratios. During construction, the steel plate should be corrosion-protected, and mechanical anchor bolts should be installed to assist in fixing and prevent plate detachment.

4. Rebar Planting Reinforcement
Through the process of drilling, hole cleaning, adhesive injection, and rebar (or bolt) implantation, anchor nodes are formed in the concrete structure to enhance the connection between new and old structures or improve overall structural integrity. The rebar planting depth should meet design requirements (typically 15-20d, where d is the rebar diameter), and the rebar diameter and spacing should be determined through structural calculations. This method is commonly used for reinforcing joints between prefabricated slabs or connecting new components.

5. House Rectification and Jacking
For tilted houses, jacking rectification technology is employed, gradually lifting the settlement side using hydraulic jacks while monitoring the house's verticality and structural stress changes. During rectification, the lifting speed should be controlled (typically ≤5 mm/d) to avoid secondary structural damage. After rectification, the foundation should be reinforced to prevent recurrence.

6. Beam, Slab, and Column Reinforcement and Strengthening
For locally damaged components, repair can be achieved through methods such as section enlargement (e.g., concrete encasement), steel plate bonding, or carbon fiber sheet adhesion. Section enlargement involves chiseling away the original component's protective layer, implanting rebar, and pouring new concrete, suitable for components with severely insufficient bearing capacity; adhesive reinforcement methods require selecting materials and layouts based on the component's stress characteristics.

Construction Key Points: Before reinforcement, structural inspection and load calculation should be conducted to develop a specialized construction plan; during construction, avoid causing secondary damage to the original structure; after reinforcement, acceptance testing and long-term monitoring should be carried out to ensure the reinforcement effect meets design requirements.