On-site Fabrication of Container Houses

The on-site fabrication of container houses adheres to a modular design concept, achieving efficient construction through factory-prefabricated core components and rapid on-site assembly. The core process encompasses four main stages: design, production, transportation, and installation.

1. Modular Design and Factory Prefabrication
Container houses are based on standardized modules, each containing a complete structure, interior decoration, and equipment systems. Automated production lines in factories are used to manufacture these modules: steel frames are formed through welding or bolt connections, walls are filled with fireproof and thermal insulation materials such as rock wool and polyurethane, and integrated utilities including water and electricity pipelines, bathroom fixtures, and cabinets are installed. Some products even come with completed flooring, wall decorations, and doors and windows. For example, a smart factory in Guangdong can produce up to 50 modules per day with a manufacturing precision of 1-2 millimeters, ensuring component interchangeability.

2. Transportation and On-site Preparation
Modules are transported to the construction site via container trucks or ships, with protective measures taken before transportation to prevent deformation. On-site, foundational work must be completed in advance, including ground leveling, laying concrete or steel foundations, and reserving utility connections. For multi-story buildings, supporting steel frames must be installed.

3. Modular Assembly and Commissioning
After being hoisted into place, modules are connected using high-strength bolts or welding to form the overall structure. The installation process follows the principle of 'main structure first, then accessories,' starting with structural connections between modules, followed by utility connections, and finally installing exterior decorative panels and interior finishes. For example, an Australian project used a 'building block' approach, assembling 87 modules in 20 days, reducing the construction period by 60%-70% compared to traditional buildings.

4. Quality and Safety Control
Key steps include inspecting module connection joints, testing the tightness of water and electricity systems, and conducting fire resistance inspections. Steel structures must comply with the GB50011 seismic code, and wind resistance must pass simulations for 12-level strong winds. For example, a product from a Suzhou company uses a fully welded frame, showing a deformation of only 2 millimeters under 12-level winds, well below the national standard limit of 10 millimeters.