Prefabricated Reinforced Concrete House Construction

Prefabricated reinforced concrete house construction is a building form that involves industrial production of building components and on-site assembly. It is also known as prefabricated modular construction or modular architecture.

Construction Process

• Factory Prefabrication: The building is disassembled into independent modules, which are manufactured in the factory. Components such as ceilings, walls, and bathroom waterproof layers are produced separately and then assembled on the final assembly platform. All components, including ceilings, floors, and water and electricity pipelines, are prefabricated on the factory assembly line.
• On-site Assembly: The prefabricated components are transported to the construction site and assembled like building blocks. For example, at a construction site of a real estate project in Shanghai, tower cranes transport the prefabricated 'building blocks' and install them in the appropriate positions. In a public housing project in Shenzhen, Guangdong, five residential buildings nearly 100 meters high are assembled from 6,028 concrete modules.

Main Types

• Panel-based Prefabrication: Using prefabricated wall panels and floor slabs as core components, this method can expand the usable area but has limited design flexibility.
• Box-based Prefabrication: By combining prefabricated functional units, construction speed can be increased by 50%-70%, but it requires higher transportation and lifting equipment.
• Frame-based Prefabrication: The main components are prefabricated and connected on-site with cast-in-place concrete to form an integrated prefabricated structure.

Technologies Involved

• Prefabricated Concrete Structures: These are concrete structural buildings designed and constructed primarily using factory-produced reinforced concrete prefabricated components, assembled on-site.
• Steel Structures: This is also within the technical scope of prefabricated modular construction.

Advantages

• Shortened Construction Period: Compared to traditional construction methods, the construction period for modular buildings can be reduced by more than 60%.
• Controllable Quality: Each steel bar is precisely positioned, with errors and precision controlled to the millimeter.
• Energy Efficiency and Environmental Protection: Reduces material waste and minimizes noise, dust, construction waste, and traffic congestion at the construction site, which are disruptive factors.
• Easy Maintenance: Modular buildings have the advantage of being easy to maintain.