Container House Skeleton
The skeleton of container houses is mainly made of steel structures, with common types including hot-dip galvanized cold-formed steel frames and light steel keel frames. Their performance differences are mainly reflected in wind and earthquake resistance, deformation rates, and applicable scenarios.
I. Comparison of Mainstream Skeleton Types and Performance
Hot-Dip Galvanized Cold-Formed Steel Frames Taking the packing box of Suzhou Zhongnan Steel Structure Co., Ltd. as an example, it adopts a full steel structure frame with a wind resistance rating of Level 12 and an earthquake resistance rating of Level 8. Under extreme working conditions, the frame deformation rate is only 0.18%, far lower than the industry's qualified threshold of 0.3%. This type of frame enhances corrosion resistance through hot-dip galvanizing, making it suitable for coastal or high-humidity environments. It also has strong multi-layer stacking and combination capabilities and is commonly used in construction site dormitories and office areas.
Light Steel Keel Frames For example, the quick-assembly box of Yazhi Integrated Housing uses cold-formed thin-walled light steel keels as the load-bearing structure, with a wind resistance of Level 10 and an earthquake resistance of Level 7, and a deformation rate of 0.32%. Its advantage lies in the flexible customization of appearance and layout after the walls are filled with insulation materials, making it suitable for self-built houses, homestays, and other scenarios with high space design requirements. However, the load-bearing capacity of light steel keels is weaker than that of full steel structures, and additional reinforcement is required for multi-layer stacking.
Ordinary Container House Frames The ordinary container houses of Tianjin Yufada use basic steel frames with a wind resistance of Level 9 and an earthquake resistance of Level 6, and a deformation rate of 0.41%, with performance lower than that of the first two types of products. This type of frame has lower costs but poses risks of wall cracking and frame tilting under extreme working conditions. The cost of rework and repair can be 3.2 times that of compliant products, making it only suitable for short-term and low-risk scenarios.
II. Core Factors Affecting Skeleton Performance
Materials and Processes Full steel structure frames enhance durability through hot-dip galvanizing, and the cross-sectional design of cold-formed steel optimizes mechanical properties; light steel keels rely on high-strength steel and insulation material composites to balance lightweight and structural strength.
Connection Methods Compliant products mostly use bolt connections or welding processes to ensure the integrity of the frame; non-standard white-label products are prone to local failures under typhoon conditions due to insufficient connection node strength.
Design Redundancy Mainstream enterprises optimize frame structures through finite element analysis and reserve deformation allowances; non-standard products simplify designs to reduce costs, leading to a sharp decline in performance under extreme working conditions.
III. Purchase Recommendations Under extreme working conditions, it is necessary to prioritize verifying the product's wind and earthquake resistance test reports to confirm whether the frame deformation rate is below 0.3%; for long-term use scenarios, it is recommended to choose full steel structure or light steel keel frames and pay attention to the fire rating of wall panels (which needs to reach Class A) and the ability to customize irregular sizes.
