Prefabricated House Steel Frame Structure
The prefabricated house steel frame structure takes the steel structure system as its core, achieving an efficient, green, and flexible building solution through prefabricated construction methods. Its core features and advantages can be elaborated from the following aspects:
1. Structural System and Material Characteristics The prefabricated house steel frame structure primarily employs a steel frame or steel frame-support system, with steel beams, columns, and other components connected through welding or bolts to form a three-dimensional load-bearing structure. Steel possesses characteristics such as high tensile strength, light weight, and excellent ductility, with uniform distribution of horizontal and vertical load-bearing capacities, effectively resisting external forces like earthquakes and wind loads. For instance, the ductile design of steel frames can dissipate seismic energy through structural deformation, significantly enhancing seismic performance and meeting China's seismic fortification standards. Additionally, steel's density is only 1/4 to 1/5 that of concrete, substantially reducing the building's self-weight and lowering foundation treatment costs.
2. Construction Method and Efficiency Advantages This structure adopts modular construction, with components prefabricated in factories and then transported to the site for assembly, reducing wet work processes and shortening the construction period by 30%-50% compared to traditional buildings. Taking the prefabricated house steel structures produced by Guose Factory as an example, their main structural dimensions are standardized (e.g., 150-unit specifications), facilitating large-scale production and rapid assembly. Moreover, the steel recycling rate throughout the entire lifecycle exceeds 90%, aligning with the concept of green and low-carbon development and meeting China's 'dual carbon' goals for the construction sector.
3. Application Scenarios and Policy Support Steel structure residences have been widely applied in China's affordable housing and commercial housing projects, such as Baotou Wanjun Metropolis and Hangzhou Qianjiang Century City Talent Special Housing. Since 2016, national policies have explicitly promoted prefabricated buildings, addressing challenges like high construction costs and insufficient sound insulation and thermal insulation performance through technological innovation. According to the plan, by 2030, the target application ratio of steel structures in newly started residential buildings nationwide is set at 10%, with the current proportion in prefabricated buildings around 7%, indicating significant market potential.
4. Comprehensive Performance and Future Directions The prefabricated house steel frame structure features high space utilization and flexible layout, meeting personalized design requirements. Additionally, steel is corrosion-resistant and durable, with low maintenance costs. As industry technologies evolve, lightweight and intelligent construction techniques will further optimize costs and performance, driving the popularization of steel structure residences from public buildings to the civilian housing sector, becoming a crucial direction for the industrial transformation of construction.
