Vanke Prefabricated House Construction

Vanke is a pioneer in China's residential industrialization in terms of prefabricated house construction, having chosen prefabricated concrete structure housing as its development direction and achieved a series of results.

Technology Selection and Development Direction

After researching various international factory-built housing systems and considering domestic realities, Vanke selected prefabricated concrete structure housing as its factory-built housing development direction from among light steel structures, timber structures, and prefabricated concrete structures. After studying prefabricated concrete structure housing in Europe, Hong Kong, and Japan, it was found that Japanese prefabricated concrete structure housing technology is the most suitable for China's situation.

Prefabricated Concrete Structure Houses (PC)

PC, or "prefabricated assembled concrete structure," is a concrete structure formed by assembling and connecting prefabricated concrete components as the main components, combined with partial cast-in-place construction. PC components are finished concrete components produced in a factory setting.

Project Applications

After the 21st century, Vanke Group developed an assembled shear wall residential structural system and applied prefabricated frame technology in projects. For example, the Nanjing Jindi Yufang project adopted a prestressed prefabricated concrete assembled integral frame structural system. The Vanke Jiuduhui project, located southeast of Nanjing South Railway Station, consists of three prefabricated assembled structure residential buildings using new construction techniques. In terms of structural support, a new support system called Sujiejia was adopted, solving problems such as slow erection speed, high density, low safety performance, and insufficient support precision of traditional steel tube scaffolding. Moreover, the scaffolding is aesthetically pleasing, generates no construction waste, and adheres to the principles of being green, environmentally friendly, efficient, and safe.

Advantages of Developing Prefabricated Concrete Houses

• Improved Quality: The exterior wall PC panels of PC buildings are prefabricated in the factory, with window and door frames installed in the steel molds before pouring the PC panel concrete, avoiding water-permeable gaps. The probability of water leakage is only one in ten thousand, effectively addressing common issues of exterior wall leakage and cracks.
• Accelerated Project Progress: Exterior wall tiles, window frames, etc., of PC panels are prepared in the factory, eliminating the need for external scaffolding on-site. Local caulking and painting can be carried out using a gondola, not occupying the total construction period. For buildings with 10 to 18 floors, the construction period can be shortened by approximately 3 to 4 months.
• Promoted Resource Integration and Improved Management Efficiency: After full industrialization, components are standardized, structures can be combined, and assembly is simple, making management easier and more effective.
• Beneficial for Capital Operations: PC buildings are constructed quickly and completed early, allowing for early capital recovery.
• Enhanced Building Product Quality: After realizing PC buildings, tiles, etc., are firmly bonded with concrete in the factory, preventing issues such as "freeze-thaw" and winning customer favor.