Container House Structure

The container house structure uses standard containers as basic units, forming a complete building through modular design and industrial production, featuring stable structure, convenient assembly and disassembly, and strong adaptability. Its core structural and performance characteristics are as follows:

1. Main Frame and Materials
Container houses use high-strength steel (such as Q355B weathering steel) as the main frame, forming a self-balancing system through rigid connections between corner fittings and side beams. For example, a company in Yiqi adopts a box design with an aspect ratio close to 2:1. The top longitudinal corrugated plate disperses stress through its corrugated geometry, avoiding local buckling and reducing material usage by about 15%. The welding or bolt connection process of the frame must comply with building seismic design codes (such as GB50011-2010) to ensure a deformation rate below 0.3% under extreme conditions such as magnitude 8 earthquakes or typhoons of force 12.

2. Envelope Structure and Thermal Performance
Walls and roofs use composite construction to enhance thermal insulation. A typical design includes a three-layer structure of "rock wool - air layer - aluminum-zinc coated steel plate": the rock wool layer is 75-100 mm thick with a thermal conductivity below 0.040 W/(m·K); the 5 mm air layer inhibits convective heat transfer, resulting in an overall heat transfer coefficient (U-value) below 0.5 W/(m²·K). This design reduces condensation risk in low-temperature environments and extends the lifespan of the steel structure.

3. Connection Nodes and Seismic Design
For earthquake-prone areas, box connections use a dual-fixing mode of "wedge lock + high-strength bolts". The wedge lock is made of heat-treated 45# steel with a 15-degree inclined surface angle, producing a self-locking effect under horizontal shear forces. Shaking table tests show that the node controls displacement within 3 mm during simulated magnitude 8 earthquakes, outperforming conventional welded nodes by about 40% in deformation amplitude, and supports repeated assembly and disassembly, reducing construction waste.

4. Corrosion Protection and Durability
The coating system uses a combination of "epoxy zinc-rich primer + polyurethane topcoat": the primer contains over 80% zinc powder, protecting the substrate through sacrificial anode principles; the topcoat adds nano-silica particles with a hardness of 3H, resisting wind and sand erosion. Salt spray tests (ASTM B117 standard) show that the coating system remains rust-free after 1000 hours, equivalent to a 15-year protection cycle in coastal or industrial pollution environments, supporting a 25-year lifespan for the box.

5. Modularity and Adaptability
Container houses can be divided into standard boxes (20-foot, 40-foot), extended boxes (with 30%-50% additional area on the sides or ends), and folding boxes (compressed for transport and expanded within 30 minutes). Through modular design, over 80% of the house's main structure, plumbing, and bathroom fixtures can be completed in the factory, requiring only assembly and utility connections on-site, shortening the construction period by 60%-70% and meeting green construction standards.