Container House Refurbishment
It is feasible to refurbish container houses into residential buildings, and there have been many successful cases.
1. Structural Optimization and Reinforcement
The traditional container has a large spacing between the longitudinal beams of the bottom frame, and direct residence can lead to insufficient floor stiffness. By adding C-shaped steel purlins between the bottom beams, the load can be evenly distributed to each main beam, allowing the container to remain structurally stable even when stacked three layers high. In addition, shot blasting and rust removal on the container surface followed by spraying with zinc-rich primer and polyurethane topcoat can form a protective system, enabling the steel to maintain an effective service life of over 15 years in harsh environments.
2. Improvement of Thermal Insulation Performance
Container houses face the challenge of the thermal bridge effect of metal walls. The conventional approach is to attach insulation boards on the inside, but this can easily create heat conduction channels at the steel framework. The improved solution adopts a thermal break lining structure, which involves filling rigid polyurethane foam between the steel framework and the interior wall panels and adding rubber thermal insulation pads at the connections of the studs, reducing the heat exchange efficiency between the inside and outside of the container by about 40%. For camp dormitory projects, such treatment can make the indoor temperature 8 to 10 degrees Celsius higher than the outside in winter without heating, reducing reliance on heating equipment energy consumption.
3. Spatial Layout and Functional Design
Container houses can be flexibly designed in terms of spatial layout according to needs. For example, using foldable custom-made beds that can be folded into sofas during the day and unfolded into double beds at night to meet daily sleeping and leisure needs. The kitchen can be designed in a linear shape to save space and meet cooking needs, while being equipped with a large amount of storage space to ensure tidiness and convenience. The bathroom can be designed with rounded corners to enhance aesthetics and comfort of use.
4. Environmental Protection and Sustainability
The core value of container houses lies in the full life-cycle recycling of their materials. Each standard 20-foot container consumes about 1.2 tons of steel, and compared to one-time poured concrete temporary houses, the carbon emissions per unit area are significantly reduced. Moreover, container houses can be hoisted as a whole to a new site, with the disassembly and assembly loss rate controlled within 5%, greatly reducing the generation of construction waste.
