Container Box House Production
The production of container box houses requires integrating modular building concepts, completing the process through factory-prefabricated standardized modules and rapid on-site assembly. The core processes include design decomposition, factory production, transportation and lifting, on-site assembly, and performance optimization.
1. Design Decomposition and Standardization
Based on the building's functional requirements, the overall structure is divided into independent modules such as the floor, roof, and four side panels. Each module must comply with international standard dimensions (e.g., a 20-foot container can bear 25 tons, while a 40-foot container can bear 45 tons). During the design phase, special attention must be given to the connection nodes between modules to ensure that the assembled structure meets the GB50011-2010 seismic design code for buildings. For example, Suzhou Zhongnan Steel Structure Co., Ltd. uses a fully steel structural frame and achieves weld strength compliance through automated welding processes, with only 2mm of deformation in the frame under 12-level strong winds.
2. Factory Prefabrication and Integrated Production
Modules are completed in the factory with integrated installations of the main structure, plumbing and electrical systems, interior and exterior wall decorations, and bathroom fixtures. Taking a smart factory in Guangdong as an example, its steel structure modular production line achieves a daily output of 50 modules through robotic collaboration, with manufacturing precision controlled within 1-2 millimeters. The module interior typically uses a combination of galvanized steel frames and rock wool sandwich panels, forming a composite structure consisting of an outer wind-resistant galvanized sheet, an intermediate 80-100mm thick rock wool insulation layer, and an inner PVC-coated steel sheet, effectively improving thermal performance.
3. Transportation and On-Site Lifting
After being transported by sea or land to their destination, the prefabricated modules require lifting equipment for installation. Module design must consider transportation height restrictions (e.g., a foldable container house has a folded height of only 41 cm, allowing 20 units to be transported on a 17-meter flatbed truck), while ensuring that the lifting points meet strength requirements. During on-site assembly, modules are connected using bolts or welding, with some companies adopting a semi-welded, semi-bolted structure to balance installation efficiency and structural durability.
4. Performance Optimization and Acceptance
After assembly, airtightness, waterproofing, and structural stability tests must be conducted. To address the high thermal conductivity of metal boxes, an elevated floor can be added to block ground cold bridge conduction, or a three-layer construction (outer galvanized sheet + intermediate rock wool layer + inner PVC steel sheet) can be used to reduce indoor temperature fluctuations by 40%. Additionally, details such as window and door sealant strip treatment and solar panel integration can further enhance living comfort.
