Container House Self-Assembly

When self-assembling a container house, it is crucial to focus on three core aspects: selection, ground treatment, and lifting and positioning. The specific steps and technical points are as follows:

I. Selection Stage: Structural Type and Material Quality are Key
Container houses come in two main structural types: welded integral containers and bolt-connected modular containers. Welded containers are fabricated as a whole in the factory, with a direct load path (roof load → side wall columns → bottom beams → ground), offering strong resistance to deformation and suitability for frequent lifting and relocation. Modular containers are connected using standard plates and bolts, with the tightness of the joints directly affecting stability. It is essential to inspect the steel wall thickness of the columns and bottom beams (common specifications range from 1.5 to 3 millimeters; thicker walls provide greater load redundancy but increase self-weight). Additionally, the coating process on the container surface must meet anti-corrosion requirements, with hot-dip galvanizing offering a longer lifespan than cold-dip galvanizing, especially in areas with significant temperature variations and humidity changes, where coating quality directly determines the rate of rusting.

II. Ground Treatment: A Uniform Load-Bearing Foundation is Essential
The bottom beams of container houses are typically I-beams or channel steels, with limited contact area with the ground. Placing them directly on soft soil can lead to uneven settlement, causing door and window deformation and wall cracks. The correct approach is as follows:

1. Clear the ground of loose soil and debris, and compact the original soil layer;
2. For long-term fixed use, pour a concrete strip foundation (width 30-50 centimeters, depth determined by the frost line), with a horizontal level difference on the foundation top not exceeding 5 millimeters;
3. For short-term use, use prefabricated concrete blocks or steel plates (spacing not exceeding 2 meters), with a crushed stone leveling layer beneath the blocks to ensure all load-bearing points are on the same horizontal plane.

III. Lifting and Positioning: Synchronous Load Application and Level Control
Container houses typically have 4-6 lifting points at the bottom. When lifting, use steel wire ropes with sufficient load-bearing capacity and ensure that all lifting points apply load synchronously to avoid distortion of the container due to unilateral loading. After positioning, immediately check the fit between the bottom beams and foundation blocks, and use thin steel plates to fill any local gaps; otherwise, floor vibration or abnormal noise may occur during subsequent use. Levelness should be measured along the longitudinal and transverse directions of the bottom beams using a level, with an error controlled within 2 millimeters per meter.