Prefabricated Panel Building Assembly Houses

Prefabricated panel building assembly houses are a form of construction that involves industrial production of building components and on-site assembly. They are an application of prefabricated modular construction, offering advantages such as shortened construction periods and reduced pollution. Moreover, contemporary technology has resolved the defects of older models.

I. Basic Concepts and Structural Types
The core of prefabricated panel building assembly houses lies in "industrial prefabrication + on-site assembly." Their components include prefabricated products such as beams, panels, walls, and columns, enabling efficient construction through standardized production. The structural types mainly include prefabricated concrete structures and steel structures: the former primarily uses prefabricated concrete components and is suitable for multi-story and high-rise buildings; the latter uses lightweight steel as the framework and is commonly used for low-rise or temporary buildings. Both structures reduce the amount of wet work in traditional cast-in-place operations through factory-prefabricated components and on-site assembly, thereby shortening construction periods and reducing construction pollution.

II. Technological Iteration and Defect Improvement
Historically, prefabricated panel houses suffered from issues such as poor thermal insulation, inadequate sound insulation, and insufficient earthquake resistance due to ordinary materials, rough connection techniques (e.g., relying solely on cement mortar bonding), and a lack of systematic design. Contemporary modular construction has resolved these defects through technological upgrades:

1. Composite Floor Slab Technology: Prefabricated panels are combined with cast-in-place reinforced concrete layers to form a highly continuous assembled monolithic floor slab. This approach retains the transportation and installation advantages of prefabricated components while enhancing structural integrity through the cast-in-place layer, making it suitable for high-rise and large-span buildings and saving formwork materials.
2. Systematic Design Optimization: Through integrated design of architecture, structure, and equipment, thermal insulation, sound insulation, and waterproofing performance are integrated. For example, the use of composite thermal insulation wall panels, double-glazed windows, and elastic sealing materials significantly improves living comfort.
3. Connection Technique Upgrades: Reliable connection methods such as high-strength bolts, welding, or grout-filled sleeves are used to replace traditional rough connections, enhancing structural earthquake resistance.

III. Application Cases and Market Performance

1. International Market: In the first four months of 2026, the export value of modular houses from the Guangzhou Customs district reached 1.4 billion yuan, a year-on-year increase of 38.1%, demonstrating the competitiveness of Chinese-made prefabricated houses in the international market. They are mainly exported to countries along the "Belt and Road" to meet rapid construction needs.
2. Domestic Projects: Both the Beijing Changping Life Valley International Pharmaceutical Smart Manufacturing Park (Phase II) and the Quzhou Beihang Digital Economy Industrial Park project have adopted assembled composite floor slab technology, verifying its feasibility in high-rise buildings and providing a technological model for the renovation of older prefabricated panel houses.