On-site Fabrication of Container Houses

The core steps of on-site fabrication of container houses include foundation construction, module lifting, assembly and fixation, and decoration finishing, which require a combination of factory prefabrication and on-site assembly techniques.

1. Foundation Construction and Site Preparation

The on-site installation of container houses requires a solid foundation. First, the floating soil on the site should be cleared and the original soil layer compacted. For long-term fixed use, a concrete strip foundation should be poured, with a recommended width of 30 - 50 centimeters and a depth determined by the thickness of the frozen soil layer. The horizontal error of the foundation top surface should be controlled within 5 millimeters. For short-term use scenarios, prefabricated concrete pads or steel pads can be used, with a pad spacing of no more than 2 meters and a crushed stone leveling layer laid underneath to ensure uniform force distribution. During foundation construction, the pre-embedding of water and electricity pipelines should be planned simultaneously to avoid structural damage caused by later chiseling.

2. Module Lifting and Positioning

After arriving at the site by sea or land transportation, container modules need to be lifted using professional lifting equipment. The lifting points are usually located at the four corners or the middle of the box bottom. Steel wires with sufficient bearing capacity should be used, and it should be ensured that all lifting points are under synchronous force to avoid box distortion caused by unilateral force. After landing, the fit between the bottom beam and the foundation should be checked immediately. Thin steel sheets should be used to pad any local suspended areas. A level should be used to detect the longitudinal and transverse levelness of the bottom beam, with an error controlled within 2 millimeters per meter.

3. Module Assembly and Structural Fixation

The assembly methods of container houses include horizontal assembly and vertical stacking. For horizontal assembly, bolts should be used to connect the corner fittings of adjacent boxes, and the bolt tightening torque should comply with design specifications to ensure the shear resistance of the connection nodes. For vertical stacking, positioning pins or connectors should be set between the upper and lower boxes and fixed by welding or high-strength bolts to form an overall load-bearing structure. After assembly, the alignment of door and window openings should be checked. If the error exceeds 5 millimeters, the module positions should be adjusted.

4. Decoration Finishing and Functional Completion

After the structure is fixed, interior and exterior decoration construction should be carried out. Inside, floor leather or wooden floors should be laid, and lighting fixtures, switches, sockets, and air conditioning holes should be installed. Reserved pipelines should be protected by metal sleeves. Outside, sealant should be applied to the box assembly seams, using weather-resistant materials such as glass curtain wall sealant, with a waterproof performance that can last for more than 5 years. Doors and windows should be equipped with anti-theft nets, and their opening and closing flexibility should be tested. The roof should be equipped with gutters or water chutes to ensure smooth drainage. Finally, the exterior facade can be beautified by spraying environmentally friendly paint, installing decorative panels, or planting green plants to enhance the visual effect.