Demountable Container House Structure

The demountable container house structure typically employs a steel frame connected with bolts, constructed using standardized container units, and features modularity and demountability.

Structural Types and Characteristics

Demountable container houses can be categorized into three types based on their structural forms:

1. Traditional Cargo Container-Modified Box Houses: These are directly modified from discarded shipping containers, retaining the original frame structure and adjusting the internal space through cutting and welding. Their advantages include low cost and material recycling, but they are limited by internal space layout and are prone to structural fatigue after multiple disassemblies and assemblies.
2. Brand-New Welded Box-Type Mobile Houses: These are constructed by welding new steel materials into standardized container units, offering high structural strength and suitability for long-term fixed use. However, the welding process makes disassembly difficult, and they are typically used in one-time or low-frequency disassembly scenarios.
3. Demountable Box-Type Mobile Houses: The core structure consists of a bolt-connected panel frame, with all components (such as columns, beams, and wall panels) fixed with standardized bolts without welding. Their advantages include multiple disassemblies and assemblies, lightweight materials, and rapid assembly, making them particularly suitable for construction site project offices, temporary exhibitions, and other scenarios requiring frequent relocation.

Construction Process and Key Technologies

The construction of demountable box-type mobile houses must strictly adhere to standardized procedures:

1. Bottom Frame Installation: Fix the lower corner fittings to the bottom beams with bolts, lay the purlins, and measure the diagonals to ensure verticality. When connecting the bottom purlins, distinguish between specifications to reserve space for subsequent floor leveling.
2. Column and Top Frame Connection: The columns and bottom frame are not fully tightened with bolts initially, leaving room for adjustment. The top frame is connected step-by-step through the upper corner fittings, long beams, and short beams, using a level to calibrate the verticality of the columns and temporarily supporting them with top purlins if necessary.
3. Sealing and Reinforcement: Attach sealing strips on the inner side of the frame to prevent water infiltration. After installing the drainage channels and pipes, seal the connections with glue. Reinforce the intersections of the top purlins to enhance overall stability.
4. Wall Panel and Ceiling Installation: Pre-embed fixing components according to the positions of doors and windows, and fix the wall panels with bolts or clips. The ceiling fixing method should be adjusted based on whether there are wall panels on both sides (if not, additional keel supports are required).
5. Internal Decoration and Functional Completion: Drill holes in the inner wall for wiring, lay glass wool insulation, and finally install and fix the roof tiles.

Application Scenarios and Material Selection

Materials for demountable box-type mobile houses emphasize lightweight and rapid assembly, such as using high-strength aluminum alloy or galvanized steel plate for the frame, color-coated steel plates or composite panels for wall panels, and MGO boards (magnesium oxide boards) for the floor to balance fire resistance and moisture resistance. Their modular design results in low transportation costs and high construction efficiency, making them widely applicable in construction sites, disaster emergency response, military camps, and other scenarios.