Renovation of Prefabricated Panel Houses
The renovation of prefabricated panel houses should be carried out comprehensively from multiple aspects, including structural safety, walls and roofs, reinforcement measures, construction processes, functional upgrades, and exterior renovations.
Structural safety assessment is the foundation of renovation. Before renovation, a comprehensive assessment of the prefabricated panel house must be conducted, focusing on inspecting the crack width at the production points of the prefabricated panels. Special treatment is required if the crack width exceeds 0.3 millimeters. At the same time, the connection status between the prefabricated panels and the ring beams should be checked. If the bolt corrosion rate exceeds 30%, replacement is necessary to ensure the structural safety of the house.
Wall and roof renovations are key to improving house performance. The original wooden roof can be removed and replaced with a newly poured concrete roof to enhance waterproofing and structural stability. The exterior wall tiles can be completely removed and repainted, and reinforced with steel bar planting and grouting to strengthen the load-bearing capacity and tensile properties of the walls, thereby improving the overall safety of the house.
Reinforcement measures are an important part of renovation. At the panel joint positions, the original filling materials should be removed, No. 6 deformed steel bars should be implanted, and C30 fine aggregate concrete should be poured to enhance the connection strength of the panel joints. Constructional columns (with a cross-section of 240*240 millimeters) should be added at the four corners of the house, tied with No. 6 and No. 8 steel bars and connected to the floor slab to improve the overall stability of the house.
The construction process should be scientific and standardized. The principle of starting from the middle and then moving to the sides should be adopted for segmented demolition and cutting, maintaining symmetrical demolition. The daily demolition volume should not exceed 30% of the total floor area. During the demolition process, real-time monitoring of the stress changes in the support system is required, and the use of heavy hammer impact for demolition is prohibited to ensure construction safety.
Functional upgrades can improve living comfort. For issues such as poor sound insulation and limited space in prefabricated panel houses, soundproof panels and double-glazed windows can be used to enhance sound insulation. The spatial layout can be optimized to reasonably plan room functions. Elevators and other facilities can be added according to needs to improve living convenience.
Exterior renovations can enhance the aesthetic appeal of the house. The size of the front door can be enlarged to improve ventilation and lighting. The exterior facade can be redesigned, such as by repainting the exterior walls and replacing doors and windows, to make the house look more modern and aesthetically pleasing.
