Sanmenxia Prefabricated Houses
The prefabricated houses in Sanmenxia mainly include two types: light steel villas and packing-box houses, each with distinct characteristics in terms of structure, construction, performance, and application scenarios.
Light Steel Villas
Light steel villas feature a lightweight yet high-strength steel frame as their core structure, with a self-weight only one-fourth that of traditional concrete structures, significantly reducing the load on the foundation. The structural components are prefabricated in the factory and assembled on-site using bolts, generating minimal waste during construction and aligning with green building principles. The walls adopt a double-layer design, with rock wool insulation sandwiched between an outer cladding panel and an inner gypsum board, integrating sound insulation, thermal insulation, and waterproofing functions. The heat transfer coefficient can be reduced to 0.3W/(m²·K), effectively withstanding cold spells. The roofing materials typically include lightweight concrete tiles or metal tiles, balancing durability and aesthetics.
In terms of adaptability, light steel villas demonstrate strong compatibility with complex terrains. Foundations can utilize micro-piles or rock anchors, minimizing excavation and reducing disturbance to the surrounding environment. Under a seismic design intensity of 7 degrees in the Sanmenxia region, the structural displacement angle can be controlled within 1/300, meeting seismic safety requirements. Additionally, light steel villas have a short construction period, and their modular design facilitates future renovations or expansions, making them suitable for rural self-built homes, tourist resort villas, and other scenarios.
Packing-Box Houses
Packing-box houses are designed around the concepts of “modularity” and “prefabrication,” with their main structures standardized and produced in factories to form independent box modules. After being transported to the site, they can be assembled through lifting, joining, and foundation connections, significantly shortening construction time and making them particularly suitable for emergency housing or temporary building needs. Their greatest advantage lies in flexibility and portability: standardized box units can be combined like building blocks to form buildings of varying scales and functions, and they can be disassembled, packed, and transported to new locations for reassembly, enabling resource recycling.
In terms of performance, modern packing-box houses have significantly improved thermal insulation through the use of sandwich panel materials such as rock wool and polyurethane, meeting regular residential and work requirements. The interior space can be functionally divided according to needs, such as dormitories, offices, and restrooms, and is equipped with water and electricity systems for “plug-and-play” functionality. Due to their convenient transportation and rapid assembly, packing-box houses are commonly used in scenarios such as construction site temporary housing, post-disaster reconstruction, and commercial exhibitions, offering an efficient and economical building solution.
