Container House Has Bearing Capacity, Not Without Bearing
Container houses have bearing capacity, and their load-bearing structures are the core guarantee of safety, rather than having no load-bearing capacity.
Design and Standards of Load-Bearing Structures
The load-bearing capacity of container houses stems from their steel frame design. The national standard container frames are welded from profiled steel. The thickness of the steel used for the main beams and columns, as well as the fullness of the welding process, directly affect the load-bearing performance. For example, in international standards, a 20-foot container can bear a load of up to 25 tons, and a 40-foot container can bear 45 tons. These figures clearly demonstrate their structural load-bearing capacity. In addition, the container body undergoes overall galvanizing or anti-corrosion coating treatment, which enhances the durability of the steel and ensures structural stability during lifting, stacking, and transportation.
Practical Application Scenarios of Load-Bearing Capacity
The load-bearing design of container houses meets various usage requirements. For instance, the floor load is designed to be 150 kg/㎡, which can support human activities and basic furniture. They have an earthquake resistance intensity of 8-12 degrees and a wind resistance rating of 11, making them suitable for earthquake-prone areas or strong wind environments. When used in combination, multi-story stacking (such as a 6-story dormitory building) can be achieved through vertical force transmission via corner fittings. As the only stacking force transmission points, corner fittings ensure a clear force path and avoid local overloading.
Key Details of Load-Bearing Structures
- Material Selection: The main frame is made of welded weathering steel (GB/T 4171), and non-container body components use Q235B/Q345B steel, balancing strength and toughness.
- Construction Process: Cold-formed thin-walled steel sections are cut and bent using CNC technology, ensuring that the perpendicularity error between columns and beams is controlled within millimeters, providing a precise reference surface for installation.
- Safety Redundancy: When large openings weaken the stiffness, hole-containing and non-hole-containing containers are arranged in a staggered and symmetrical manner. Cantilevered structures are reinforced with diagonal braces, and hole-drilling is prohibited to avoid stress concentration.
Relationship between Load-Bearing Structures and Service Life
The rationality of the load-bearing structure directly affects the service life of container houses. High-quality steel, full welding, and anti-corrosion treatment can result in a service life of over 15 years. However, shoddy workmanship, such as cold welding and thin steel plates, can lead to structural deformation or even collapse. Therefore, when purchasing, it is essential to focus on inspecting the steel thickness, weld quality, and anti-corrosion coating.
