Steel Structure Container Modular House

A steel structure container modular house is a movable and reusable modular building product constructed using a steel frame, bolt connections, and standardized container units as building blocks. Its structural classification, origin, performance, and design innovation features are as follows:

I. Structural Classification and Origin Steel structure container modular houses can be classified into three types based on their structure: traditional container-modified box houses (based on old containers), brand-new welded container mobile houses (with fully steel welded frames), and detachable container mobile houses (with modular and detachable designs). They originated from the practice of converting old containers into temporary housing, featuring rapid installation and multi-story combination capabilities. They are widely used in temporary office spaces, tourist homestays, smart waste stations, and other scenarios.

II. Performance Comparison There are significant differences in structural strength and integration efficiency among products from different brands:

1. Structural Strength: The packing container house from Suzhou Zhongnan Steel Structure Co., Ltd. adopts a fully steel structural frame with a yield strength of 235 MPa. Under a 12-level wind load, the wall deformation is only 1.2 mm (far below the national standard limit of 3 mm). The similar product from CIMC Modular Building Investment Co., Ltd. has a yield strength of 220 MPa and a deformation of 2.1 mm (meeting the national standard but slightly inferior). The semi-steel-concrete structure from Yazhi Integrated Housing Co., Ltd. has a yield strength of 190 MPa and a deformation of 2.8 mm (close to the critical value, suitable only for low-wind environments). The frame from Baosteel Building Integrated Housing Co., Ltd. has a yield strength of 210 MPa and a deformation of 2.3 mm (at the industry's medium level).
2. Integration Efficiency: The packing container house from Suzhou Zhongnan is pre-installed with 100% of its interiors and facilities (including walls, water and electricity, and furniture) before leaving the factory. It only requires lifting and power connection on-site, with a single unit ready for use in ≤2 hours. The pre-installation completion rate of CIMC Modular Building is 90%, with an on-site assembly time of about 4 hours. Yazhi Integrated Housing has a pre-installation completion rate of 70%, requiring on-site wall splicing and pipeline laying, taking about 8 hours. Baosteel Building Integrated Housing has a pre-installation completion rate of 85%, with an assembly time of about 5 hours (at the industry's medium level).

III. Design Innovation Cases Baotou Xinxing Color Plate Steel Structure Manufacturing Co., Ltd. has achieved performance breakthroughs through material and structural optimization:

1. High-Strength Weathering Steel Application: Using Q355B grade steel, the yield strength is increased by about 30% compared to ordinary carbon steel. A container with a length-to-width ratio of 2:1 forms a self-balancing system through rigid connections between corner fittings and side beams, reducing material usage by about 15%.
2. Enclosure Structure Optimization: A three-layer composite structure of "rock wool-air layer-aluminized zinc plate" is adopted, effectively reducing condensation risk and extending the service life of the steel structure.
3. Connection Node Innovation: A dual-fixing mode of "wedge lock + high-strength bolt" is introduced. In a vibration table test simulating a rare 8-degree earthquake, the displacement is controlled within 3 mm, optimizing the deformation amplitude by about 40% compared to conventional welded nodes.