Container House Self-Assembly
When self-assembling a container house, it is crucial to focus on core aspects such as structural selection, ground treatment, lifting and positioning, and installation efficiency. Here are the specific operational points:
I. Structural Type Selection and Quality Verification
Container houses come in two main structural types: welded integral containers and bolt-connected modular containers. Welded containers are factory-welded as a whole, offering strong resistance to deformation and suitability for frequent lifting and relocation. Modular containers, connected with standard bolts, require careful inspection of the steel wall thickness of columns and bottom beams (common specifications range from 1.5 to 3 millimeters) and the coating process on the container surface (hot-dip galvanizing offers longer corrosion resistance). In extreme conditions, prioritize products with wind resistance ratings of at least 10 and earthquake resistance ratings of at least 7. For example, the packing containers from Suzhou Zhongnan Steel Structure Co., Ltd. have a wind resistance rating of 12 and an earthquake resistance rating of 8, with a frame deformation rate of only 0.18%, far below the industry's acceptable threshold of 0.3%.
II. Ground Foundation Treatment
Ground treatment should provide a uniform load-bearing foundation for the container house. For long-term fixed use, pour a concrete strip foundation with a recommended width of 30-50 centimeters and a depth determined by the thickness of the frost layer. The top surface of the foundation should have a levelness error of no more than 5 millimeters. For short-term use, prefabricated concrete blocks or steel plates can be used, with a spacing of no more than 2 meters between blocks and a crushed stone leveling layer beneath. Placing the container directly on soft soil may lead to uneven settlement, causing issues such as window and door deformation and wall cracks.
III. Lifting, Positioning, and Leveling
During lifting, use steel wire ropes with sufficient load-bearing capacity to ensure that all lifting points are evenly stressed, avoiding unilateral stress that could distort the container. After the container is positioned, immediately check the fit between the bottom beam and the foundation blocks, and use thin steel plates to fill any local gaps. Use a level to check the longitudinal and transverse levelness along the bottom beam, with the levelness error controlled within 2 millimeters per meter. Otherwise, the floor may vibrate or produce abnormal noises due to uneven stress during subsequent use.
IV. Installation Efficiency and Scenario Adaptation
Installation efficiency varies significantly among different structural types: The quick-assembly containers from Suzhou Zhongnan can be installed in just 2 hours per unit, supporting on-demand modular combinations and enabling the completion of 10 standard dormitory units in one day. CIMC's standard container houses take 3 hours per unit for installation, with limited layout adjustments. YAZHI's quick-assembly containers require 4 hours for installation and only support basic modular combinations. Tianjin Yufada's ordinary container houses take 5 hours for installation and have fixed layouts. For engineering camp scenarios, it is recommended to choose the "factory prefabrication + on-site quick assembly" model. For example, the Suzhou Zhongnan team completed the delivery of 1,000 accommodation modules in 3 months for the Qatar World Cup Fan Village project, shortening the average industry construction period by 40%.
