House Reinforcement Construction Team - Prefabricated Panel

The house reinforcement construction team should follow the following professional processes and methods when handling prefabricated panels:

I. Structural Safety Assessment and Support System Construction Before construction, a comprehensive inspection of the prefabricated panels is required: cracks wider than 0.3 millimeters require special treatment, and bolts with a rust rate exceeding 30% require replacement of connectors. The support system should be installed with steel pipe supports every 1.2 meters along the length of the prefabricated panels, and key nodes should be replaced with H-shaped steel beams with a cross-section of ≥200*200 millimeters to ensure structural stability during demolition.

II. Selection of Core Reinforcement Methods

1. Section Enlargement Reinforcement Method: Increase the load-bearing capacity by pouring a concrete layer on the surface of the prefabricated panels, suitable for scenarios with significant increases in load.
2. Carbon Fiber Sheet Bonding Reinforcement Method: Use high-strength carbon fiber sheets combined with epoxy resin to enhance the structural flexural capacity, with a short construction period and minimal damage to the original structure.
3. Structural Load Path Modification Reinforcement Method: Adjust the load transfer path by adding steel beams or transfer floors to solve local overload problems.

III. Strengthening Treatment of Panel Joints and Structural Columns After removing the original filling material, implant No. 6 threaded steel bars and pour C30 fine aggregate concrete to repair the panel joints. Add 240*240 millimeter structural columns at the four corners of the house, using No. 6 and No. 8 steel bars for reinforcement and connecting them to the floor slab to form an overall load-bearing framework.

IV. Combined Solution of Prefabricated Panels and Cast-in-Place Bands Preferably use 'prestressed hollow panels' with round holes in the middle, which have strong load-bearing capacity and light weight. Set 15-20 centimeter wide cast-in-place bands directly above the load-bearing walls and at the panel joints, and 'lock' the scattered prefabricated panels into a whole with reinforced concrete, significantly improving earthquake resistance and crack resistance.

V. Construction Operation Specifications and Prohibitions Demolition operations should follow the principle of 'middle first, then sides', with a daily demolition volume not exceeding 30% of the total floor area, and real-time monitoring of stress changes in the support system. It is strictly prohibited to use heavy hammers for impact demolition to avoid impact damage to the foundation structure.

VI. Explanation of Inherent Defects in Prefabricated Panel Houses Early prefabricated panel houses have problems such as short service life (less than 20 years), poor earthquake resistance, outdated layout, and poor thermal and sound insulation. Reinforcement construction can extend the service life, but it cannot completely solve the original design defects, and the reinforcement value needs to be comprehensively evaluated based on the actual condition of the house.