What is Prefabricated Panel Building

Prefabricated panel building is a type of building constructed primarily using prefabricated panels, belonging to the category of prefabricated assembled buildings.

Definition and Component Types

The core component of a prefabricated panel building is the prefabricated panel, which is a cement component manufactured in a factory. The production process involves creating a mold with wooden planks, arranging steel bars, and pouring cement, ultimately resulting in two types: solid or hollow. In addition to floor panels, prefabricated assembled buildings also include wall panels, beams, and columns, all of which are standardized and produced in factories before being transported to the construction site for assembly.

Advantages

1. Efficient Construction: Components such as prefabricated panels are processed in factories and directly transported to the site for assembly, eliminating the need for on-site concrete curing time and significantly shortening the construction period.
2. Quality Control: Factory production follows standardized processes, and components undergo strict quality inspections, avoiding quality fluctuations caused by human factors during on-site construction.
3. Environmental Protection and Energy Efficiency: Factory production reduces noise, dust, and waste emissions at the construction site, while also improving material utilization and reducing waste of land resources.

Disadvantages and Limitations

1. Poor Earthquake Resistance: Prefabricated panels are connected to other components via connectors, resulting in weaker overall integrity compared to cast-in-place concrete structures. In earthquakes, they are prone to structural damage due to failure at the connection points.
2. Durability Issues: After long-term use, prefabricated panels may develop cracks due to aging at the connection points or changes in load. If waterproofing is inadequate, these cracks can lead to leakage.
3. High Dimensional Accuracy Requirements: Deviations in component dimensions can make installation difficult, necessitating reliance on high-precision molds and transportation protection, which increases construction costs.
4. Insufficient Sound Insulation: The sound insulation performance of prefabricated panels is generally weaker than that of cast-in-place concrete panels. Without additional sound insulation measures, they may cause sound interference.

Application Scenarios and Precautions

Prefabricated panel buildings are suitable for projects with strict deadlines and limited construction environments, such as multi-story residential buildings, schools, and hospitals. However, it is important to note the following: During the design phase, optimize the connection methods at nodes to enhance earthquake resistance; during the construction phase, strictly control component dimensions and connection quality; and during the usage phase, regularly inspect for cracks and leakage issues and promptly carry out repairs and reinforcement.