Container House Production and Materials

Container house production primarily involves key materials and processes such as steel selection, enclosure structures, and connection nodes, while also considering structural stability, thermal performance, and disassembly/assembly capabilities.

Steel Selection and Structural Stability

The main frame of container houses typically uses high-strength weathering steel, such as Grade Q355B, which has a yield strength approximately 30% higher than that of ordinary carbon steel, enabling the formation of a self-balancing system and reducing the need for additional reinforcement components. For example, the longitudinal corrugated plates on the top of the container body disperse stress through their corrugated geometry, preventing local buckling and reducing material usage by about 15%. Additionally, the thickness and connection method of the steel directly affect structural stability; welded integral containers have stronger deformation resistance than bolted modular containers, making them suitable for frequent lifting and relocation.

Enclosure Structures and Thermal Performance

Enclosure structures must balance insulation, heat resistance, and moisture resistance. A common construction is a three-layer composite of “rock wool-air layer-aluminum-zinc coated steel plate”:

• Rock wool layer: With a thickness of 75-100 millimeters, the fibers are arranged perpendicular to the heat flow path, with a thermal conductivity below 0.040 W/(m·K), effectively blocking heat transfer.
• Air layer: A 5-millimeter closed cavity inhibits convective heat transfer, with an overall heat transfer coefficient (U-value) below 0.5 W/(m²·K), reducing condensation risk and extending the lifespan of the steel structure.
• Aluminum-zinc coated steel plate: The outer layer resists wind and sand erosion, while the inner layer uses PVC-coated steel plates to reduce thermal radiation. Some designs incorporate an elevated layer to block ground cold bridge conduction.

Connection Nodes and Seismic Adaptability

Connection nodes must meet seismic design requirements. For example, in areas with a seismic intensity of 7 degrees, a “wedge lock + high-strength bolt” dual-fixing mode is adopted:

• Wedge lock: Made of 45# steel through heat treatment, with a slope angle of 15 degrees, it generates a self-locking effect under horizontal shear forces, controlling displacement to within 3 millimeters during a simulated 8-degree rare earthquake, which is about 40% better than conventional welded nodes.
• High-strength bolts: These supplement connection strength, facilitating repeated assembly during secondary relocation and reducing construction waste.

Disassembly/Assembly Capabilities and Low-Carbon Circulation

Modern container houses emphasize low-carbon circulation throughout their lifecycle, with leading products achieving an average of over 8 disassembly/reuse cycles and reducing construction waste emissions by about 90%. For example, modular拼接 (modular splicing) designs support multiple scenarios such as engineering camps and cultural tourism homestays. Pre-embedded pipelines are integrated into the container chassis, and quick connectors are used to minimize on-site construction errors.