Prefabricated Installation of Steel Structure Houses
Prefabricated installation of steel structure houses is a construction method that adopts prefabricated building components manufactured in factories and then transported to the construction site for rapid assembly.
I. Significant Advantages in Construction Duration
The prefabricated installation of steel structure houses significantly shortens the construction cycle through factory-based production and on-site modular assembly. For example, the main structure of some heavy steel villas can be completed in just over a month; a two-story, 206-square-meter house in Kongwei Village, Shuihu Town, Changfeng County, Hefei, required only seven days for the main structure installation (completed by seven or eight workers). Including the preliminary design and factory prefabrication stages, the total construction duration is approximately 30 days, which is more than 60% shorter than traditional methods. This efficiency improvement stems from the parallel operation mode of standardized component production and on-site construction.
II. Precise Quality Control
The construction process draws on the standardized concepts of the automotive industry to achieve full-process quality control. Steel component connections utilize bolt joint technology to avoid quality fluctuations associated with on-site welding. Through a self-developed 'building block' system combined with precise alignment and positioning using total stations, a stable steel framework can be erected in just five steps. During the installation of floor slabs and wall panels, BIM technology and laser positioning provide real-time monitoring to ensure that each panel is installed according to design specifications and secured with bolts and fixtures, achieving millimeter-level precision control.
III. Outstanding Seismic Performance
The steel structure system significantly enhances seismic resistance through flexible connections and high-strength material properties. Its seismic design intensity can reach above 8 degrees, enabling it to withstand the impact of a magnitude 8 earthquake, far surpassing traditional brick-concrete structures. This advantage stems from the ductile design of steel components, which can absorb energy through deformation under seismic action, avoiding brittle failure of the structure and providing reliable protection for residential safety.
IV. Significant Environmental Benefits
The prefabricated installation mode reduces resource consumption and environmental pollution through lightweight design and industrialized production. Steel structures are lightweight yet have high load-bearing efficiency, and when combined with the application of insulation materials, they reduce energy consumption requirements. Practices in Fujian Province and other regions have shown that this technology can reduce construction waste by more than 70%, while also minimizing dust and noise pollution from on-site wet operations, promoting the transformation of the construction industry towards green and low-carbon development.
V. Technical System and Construction Process
The technology covers two major directions: prefabricated concrete and steel structures, with component types including prefabricated beams, slabs, walls, and columns. Taking the Hefei Changfeng project as an example, the construction is divided into four major stages: the foundation construction stage completes ground treatment and positioning; the steel structure installation stage erects the main framework; the floor slab and wall panel installation stage assembles the enclosure structure; and the roof installation stage completes the top enclosure. Each stage achieves efficient connection through standardized interfaces and mechanized equipment.
