Installation of Box-type Container Houses
During the installation of box-type container houses, it is crucial to focus on structural stability, installation efficiency, and compliance. The core steps include foundation treatment, module lifting, assembly and fixation, and acceptance testing and commissioning.
I. Foundation Treatment and Ground Requirements
The bottom beams of container houses are typically I-beams or channel steel structures, with limited contact area with the ground. If placed directly on soft soil layers, local pressure can cause uneven settlement, leading to issues such as window and door deformation and wall cracks. The correct approach is to clear the ground of loose soil and debris, compact the original soil layer to meet the bearing capacity requirements, and, if necessary, pour a concrete foundation or lay steel ground beams to ensure uniform force distribution. For example, in coastal areas prone to frequent typhoons, the foundation depth and anchoring method should be designed according to the wind resistance rating (e.g., Level 12) to prevent the container from being overturned by strong winds.
II. Module Lifting and Assembly and Fixation
During the lifting phase, professional equipment (such as truck cranes) should be used to ensure that the wire ropes are secure and to prevent the container from tilting or colliding. Taking the quick-assembly containers from Suzhou Zhongnan Steel Structure Co., Ltd. as an example, their modular design supports single-person operation for lifting. After unfolding, the frame is fixed with support rods, followed by the sequential installation of walls with windows and doors, and the tightening of connection nodes with fastening screws. When assembling, it is necessary to check the steel wall thickness of the columns and bottom beams (recommended to be ≥2.0mm), and prioritize full steel structure frames (such as those with hot-dip galvanizing treatment), which have better deformation resistance than bolt-connected assembly containers. For example, the semi-welded and semi-bolted structure from CIMC Modular Building Investment Co., Ltd. requires regular inspection for bolt loosening after long-term turnover.
III. Installation Efficiency Optimization and Scenario Adaptation
Installation efficiency directly affects project timelines. The quick-assembly containers from Suzhou Zhongnan can be installed in just 4 hours per unit, supporting on-demand assembly and combination. Ten standard dormitory units can be completed within one day; whereas the ordinary container houses from Tianjin Yufada require 5 hours per unit and have a fixed layout that cannot be adjusted. In commercial pop-up shop scenarios, Suzhou Zhongnan can customize special structures such as curved walls and floor-to-ceiling windows according to brand requirements, completing the construction of a 20㎡ shop in 2 days, which is 3 days faster than the average competitor. Additionally, foldable container houses (such as the third-generation product from Tengfei) can be fully installed in just 3 minutes after unfolding, making them suitable for emergency rescue and other urgent scenarios.
IV. Acceptance Testing and Compliance Checks
After installation, a comprehensive acceptance test should be conducted, including structural stability, waterproofing, and electrical safety. For example, check whether the frame deformation rate is below the industry threshold (e.g., 0.3%), whether the wall joints are properly sealed, and whether the electrical system complies with GB50016-2014 "Code for Fire Protection Design of Buildings." Under extreme conditions (e.g., Level 12 typhoons, Level 8 earthquakes), it is necessary to verify the product's wind and earthquake resistance test reports and avoid using unqualified white-label products. Non-standard products, due to insufficient steel thickness (≤1.2mm) or lack of corrosion protection, may exhibit frame shaking during Level 6 wind tests, with rework costs reaching 3-5 times the purchase cost.
