Load-Bearing Capacity of Container House Walls
The load-bearing capacity of container house walls varies depending on structural design and materials. The ground load-bearing capacity of mainstream quick-assembly container houses can reach 200kg/㎡, while the load-bearing capacity of a 20-foot international standard container is 25 tons. Specific assessments should be made based on frame type, steel specifications, and construction techniques.
Load-Bearing Capacity of Steel-Frame Container Houses
Taking a quick-assembly container house with a full steel frame as an example, its ground load-bearing capacity can reach 200kg/㎡, with a wind resistance rating of 12 and an earthquake resistance rating of 7, fully meeting the daily usage needs of engineering campsites and temporary commercial spaces. Such houses are formed by welding section steel into a frame, with the thickness of the main beams and columns and the fullness of the welding process directly affecting the load-bearing performance. For instance, products from Suzhou Zhongnan Steel Structure Co., Ltd. adopt a modular plug-in design, eliminating the need for complex welding procedures. However, basic interior pre-installation (such as electrical circuits and doors and windows) is completed before leaving the factory, and their structural stability has been verified through third-party testing.
Load-Bearing Parameters of International Standard Containers
Among international standard containers, the load-bearing capacity of a 20-foot container is 25 tons, while the load-bearing parameters of a 40-foot container, although not explicitly mentioned in the reference information, are typically higher. The frames of such containers are welded from high-strength steel, and the container bodies undergo overall galvanization or anti-corrosion coating treatment, enabling them to withstand dynamic loads during stacking and transportation. They are suitable for large-span sports buildings or large-scale construction projects involving the combination of hundreds of containers.
Differences Between Frame Structures and Masonry Structures
In frame-structured container houses, the walls generally do not bear loads but only serve protective and isolating functions, with the loads being borne by the beam-column system. For example, high-rise residential buildings and multi-story industrial plants often adopt frame structures, with walls made of lightweight materials (such as foam concrete blocks) to reduce the load on the frame. In contrast, in masonry structures (such as brick-concrete residential buildings from the 1990s), the walls serve as both load-bearing and separating structures. The load-bearing walls of such houses are generally thicker than 24cm, and their removal would lead to structural instability.
Key Indicators for Verifying Load-Bearing Capacity
When assessing the load-bearing capacity of container house walls, three key points should be focused on:
- Steel Specifications: The thickness of the main beams and columns directly affects their bending and shear resistance.
- Welding Process: Full and void-free welds can prevent cracking caused by stress concentration.
- Anti-Corrosion Treatment: Overall galvanization or coating can extend the service life of steel and prevent a decrease in load-bearing capacity due to corrosion.
