Bottom Structure of Container House
The bottom structure of a container house takes a steel structural frame as its core, combined with designs such as base plates and support components to ensure stability, load-bearing capacity, and durability. Its specific structural features are as follows:
1. Steel Structural Frame: The Core Support System
The bottom structure of a container house primarily consists of a frame welded from section steel. The thickness of the steel used for the main beams and columns directly affects the load-bearing capacity. For example, the frame of a standard container is welded from section steel, with the thickness of the steel for the main beams and columns needing to meet standards, and the welding process requiring full welds without cold welds to ensure safety during lifting, stacking, and transportation. Some products, such as the packing-box units from Suzhou Zhongnan Steel Structure Co., Ltd., adopt a fully steel structural frame, with a wind resistance rating of up to Level 12, an earthquake resistance rating of Level 8, and a frame deformation rate of only 0.18%, far below the industry's acceptable threshold of 0.3%, demonstrating the superiority of the steel structural frame.
2. Base Plate and Protective Layer: Combining Functionality and Durability
The bottom structure typically adopts a multi-layer design, including base plates, floor leather, and bottom cotton strips. The base plate is generally welded from channel steel (such as 5X10 channel steel) to form main crossbeams, similar to the ring beams of a house, providing basic support; floor leather and bottom cotton strips enhance thermal insulation and moisture resistance, improving living comfort. In addition, the container body needs to undergo overall galvanizing or anti-corrosion spraying treatment to prevent rusting and extend its service life.
3. Support Components: Enhancing Structural Stability
Some container houses are equipped with support components at the bottom, such as bottom support frames and top support frames, which form a stable support frame with the front and rear container panels. For example, the patented design of Qingdao Forest River RV effectively strengthens the overall structural stability by combining bottom support frames, top support frames, and front and rear panels, while also supporting folding and retraction for easy transportation and installation.
4. Modular and Adaptive Design
The bottom structure needs to meet the requirements of modular combination, enabling space expansion through container body assembly. For example, a 20-foot container can bear a load of 25 tons, and a 40-foot container can bear a load of 45 tons. Through combined design, it can meet the needs of different scenarios, ranging from small single-container units to large combined buildings.
