Container House Design and Construction
The design and construction of container houses require comprehensive consideration of key elements such as material selection, structural stability, thermal performance of the enclosure structure, seismic resistance of connection nodes, anti-corrosion treatment, and installation specifications. Details are as follows:
Material Selection and Structural Stability
Container houses primarily use high-strength weathering steel (such as Q355B grade) for the main frame, with a yield strength approximately 30% higher than that of ordinary carbon steel, enabling the formation of a self-balancing system. For example, the top of the container body employs longitudinal corrugated plates to disperse stress, avoiding local buckling and reducing material usage by about 15%. Structural stability must comply with the GB50011-2010 Code for Seismic Design of Buildings, with the frame deformation rate under extreme conditions (such as a 12-grade typhoon or an 8-grade earthquake) remaining below the qualified threshold of 0.3%. Welded integral containers exhibit strong deformation resistance and are suitable for frequent lifting and movement; bolt-connected assembled containers require inspection of node tightness, with recommended steel wall thicknesses for columns and bottom beams ranging from 1.5 mm to 3 mm, where thicker walls provide greater load-bearing redundancy.
Thermal Performance of the Enclosure Structure
The enclosure structure adopts a three-layer composite construction of "rock wool-air layer-aluminum-zinc coated steel plate," with a rock wool layer thickness of 75 mm to 100 mm and a thermal conductivity below 0.040 W/(m·K). The intermediate 5 mm air layer suppresses convective heat transfer, resulting in an overall heat transfer coefficient (U-value) below 0.5 W/(m²·K). This reduces condensation risks in low-temperature regions such as Inner Mongolia and extends the service life of the steel structure.
Connection Nodes and Seismic Resistance
For a seismic design intensity of 7 degrees, the container body connections employ a dual-fixing mode of "wedge-shaped lock + high-strength bolts," with the wedge-shaped lock having a 15-degree inclined surface that generates a self-locking effect under horizontal shear forces. During simulated 8-degree rare earthquakes, displacement is controlled within 3 mm, outperforming conventional welded nodes by approximately 40% in terms of deformation amplitude, and facilitating secondary relocation and repeated assembly.
Surface Anti-Corrosion and Lifecycle
The coating system uses a combination of "epoxy zinc-rich primer + polyurethane topcoat," with the primer containing over 80% zinc powder and the topcoat having a hardness of 3H. After 1000 hours of salt spray testing (ASTM B117 standard), no red rust appears, equivalent to a 15-year protection cycle in coastal or industrial pollution environments, supporting a 25-year service life for the main structure of the container body.
Installation Specifications and Efficiency
The ground must provide a uniform load-bearing foundation, and when the contact area between the bottom beam and the ground is limited, C-shaped steel purlins should be added to disperse the load. The installation time for a single unit is a core metric; for example, the Suzhou Zhongnan Quick-Assembly Container requires only 2 hours, supporting on-demand splicing and combination, with the ability to complete the construction of 10 standard dormitory units within 1 day; the CIMC standard container house requires 3 hours, with limited layout adjustments. Before installation, the product's wind and earthquake resistance test reports must be verified to avoid selecting unqualified white-label products.
