Prefabricated House Finished Frame Structure

The prefabricated house finished frame structure is a building system that uses reinforced concrete beams, slabs, columns, or prefabricated steel structures as load-bearing skeletons, combined with lightweight partition panels for assembly. Its core characteristics can be explored from the following aspects:

1. Structural Types and Materials

1. Reinforced Concrete Frame
   Using prefabricated beams, slabs, and columns as the main load-bearing components, an overall structure is formed through node connections. Non-load-bearing walls are filled with lightweight materials such as aerated concrete blocks and expanded perlite, reducing self-weight and facilitating construction. For example, this type of structure is commonly used in high-rise residential buildings, enabling rapid construction through standardized components.
2. Steel Frame
   Centered around galvanized steel components (such as trusses and columns), it is fixed with metal connectors like bolts and angle irons. Its advantages include light weight and high strength, making it suitable for quickly erected warehouses, workshops, or container houses. For instance, a 20-foot container house has passed SAA certification, meeting the Australian market's demand for temporary buildings.

2. Connection Methods and Performance

1. Connection Technology
   Walls and frames are fixed with welded angle irons or bolts to ensure structural stability. Steel structure nodes are locked with high-strength metal connectors to avoid on-site welding errors and enhance seismic performance.
2. Performance Advantages
   • Construction Efficiency: Prefabricated components are standardized in factories, reducing on-site assembly time by over 50% and minimizing labor dependence.
   • Spatial Flexibility: Non-load-bearing walls can be freely removed or reorganized to accommodate diverse needs such as office or residential use.
   • Seismic Resistance: It complies with national standards (e.g., GB 50011-2010), but its horizontal load-bearing capacity is lower than that of shear wall structures, requiring optimization through design.

3. Application Scenarios and Improvement Directions

1. Typical Applications
   • High-rise Residential Buildings: Reinforced concrete frames combined with lightweight partitions enable efficient construction.
   • Industrial Buildings: Steel frames are used in multi-story factories, supporting large-span space requirements.
   • Special Environments: Modular houses are suitable for earthquake-prone or soft foundation areas, enhancing lateral resistance through frame-shear structures.
2. Improvement Directions
   • Structural Optimization: Control the axial compression ratio of beams and columns, avoid short column designs, and enhance node stability.
   • Material Upgrades: Use high-strength steel or fiber-reinforced concrete to improve load-bearing capacity.
   • Functional Expansion: Integrate energy-saving designs such as fully furnished glass walls and solar panels to meet green building standards.

4. Market Cases

A prefabricated galvanized steel warehouse features a 5-year warranty design with a minimum order quantity of 500 square meters, achieving 7-day delivery through modular assembly. Meanwhile, container houses reduce costs through standardized production while meeting mobility needs, becoming popular choices for emergency housing or tourist attractions.