Prefabricated Components of Houses

Prefabricated components of houses refer to steel, wood, or concrete building components pre-made in factories or on construction sites. The main types include panel assembly, box assembly, and frame assembly, covering prefabricated products such as beams, slabs, walls, and columns.

Advantages of Prefabricated Components

• Shortened Construction Period: Prefabricated components are produced in advance in factories and installed directly on-site, significantly reducing construction time. For example, the Shaowu Bamboo and Wood Industrial Park adopted prefabricated units integrating beams and slabs, halving the construction period.
• Precise Quality: Factory production is controlled through standardized processes and precision equipment, with errors controlled at the millimeter level, significantly superior to on-site pouring construction methods.
• Flexible Design: Some prefabricated components can achieve complex designs. For instance, the external wall panels of Fuzhou Construction Engineering can achieve broken-line designs, which are difficult to achieve with manual construction.
• Optimized Performance: Different components are optimized for specific needs. For example, prefabricated sandwich exterior wall panels offer excellent thermal insulation, preventing wall cracking and insulation detachment; prefabricated composite beams are dimensionally precise and have excellent seismic performance.

Main Types and Applications of Prefabricated Components

• Structural Components: These include prefabricated columns, beams, and load-bearing walls. Prefabricated columns have accurately positioned longitudinal and transverse reinforcement bars and can be made into various shapes to meet seismic requirements; fully prefabricated load-bearing walls have precisely placed reinforcement bars, high construction precision, and smooth inner and outer surfaces.
• Enclosure Components: These include prefabricated exterior wall panels, interior wall panels, and fence panels. Prefabricated sandwich exterior wall panels offer excellent thermal insulation and enable construction without scaffolding; prefabricated fences have fast construction speeds and can be used for temporary or permanent fencing.
• Functional Components: These include prefabricated balconies, stairs, composite slabs, air conditioning panels, and bay windows. Fully prefabricated balconies have an aesthetically pleasing appearance and are easy to install; prefabricated stairs solve problems such as concrete loss, difficulty in forming, and cracking in cast-in-place concrete.

Development History of Prefabricated Component Technology in China

• 1950s: Prefabricated concrete technology began, initially applied in factory and residential construction.
• 1970s: Driven by the policy of "three modernizations" in construction, technical systems such as large-panel structures and box structures were formed.
• After the 21st Century: Enterprises like Vanke Group developed prefabricated shear wall residential structural systems and applied prefabricated frame technology in engineering projects, such as the Nanjing Jindi Yufang project, which adopted a prestressed prefabricated concrete assembled integral frame structural system. With increased production efficiency and growing environmental protection demands, prefabricated components have regained attention and become an important direction for future building development.