Prefabricated House with Steel Structure

Prefabricated houses with steel structures use steel structural systems as the main load-bearing structures, with components industrially produced and assembled on-site.

I. Structural Systems and Component Types The main structural systems include steel frames, steel frame-bracing systems, etc., with components covering prefabricated beams, slabs, walls, columns, etc. There are three technical implementation methods:

1. Panel-based Assembly: Using prefabricated wall panels and floor slabs as core components, an overall structure is formed through standardized connections.
2. Box-based Assembly: Prefabricated functional units (such as kitchen and bathroom modules) are internally decorated in the factory and then transported to the site for combination, with construction speeds 50%-70% faster than traditional methods.
3. Modular Construction: With a higher degree of integration, structures, equipment, and decorations are prefabricated as a whole, achieving a "move-in ready" standard.

II. Core Advantages

1. Superior Performance: Steel structures have good ductility, with seismic performance reaching above magnitude 8; space utilization is 5%-8% higher than that of concrete structures, with flexible layouts adaptable to diverse needs.
2. Green and Low-Carbon: Material recyclability exceeds 90%, construction dust is reduced by 60%, and construction waste is reduced by 80%, meeting the requirements of the national "dual carbon" strategy.
3. Efficiency Improvement: Industrial production achieves millimeter-level precision in components, with on-site assembly periods shortened by 40%-60%. For example, the Hangzhou Qianjiang Century City project achieved "start construction and delivery in the same year".

III. Application Status and Cases

1. Project Practices: Projects such as Baotou Wanjun Metropolis (affordable housing) and Hangzhou Qianjiang Century City Talent Special Housing (commercial housing) have been applied on a large scale, covering the full range from affordable housing to high-end residences.
2. Enterprise Supply: Companies such as Foshan Huagewanshun Building Materials Co., Ltd. provide products such as light steel structure houses and steel structure villas, including types like assembled light steel keel rural villas and integrated steel structure movable board house villas. Some products support free design and are detachable and reusable.
3. Policy Goals: According to the plan, by 2030, the proportion of steel structures in newly started residential buildings nationwide will reach 10%. Currently, it accounts for about 7% of newly built prefabricated buildings in China, showing rapid growth.