Prefabricated Reinforced Concrete House

A prefabricated reinforced concrete house is a type of concrete-structured building that is primarily designed and constructed using factory-produced reinforced concrete prefabricated components, assembled on-site.

Types: Generally, they are classified into fully prefabricated buildings and partially prefabricated buildings. Fully prefabricated buildings are mostly low-rise or multi-story buildings with low seismic fortification requirements; partially prefabricated buildings mainly use prefabricated components for their main structures, which are connected on-site with cast-in-place concrete to form an integrated prefabricated structure.

Characteristics:

• Construction: The construction speed is significantly increased, facilitating winter construction. It offers high production efficiency, with construction periods shortened by over 60%, on-site labor reduced by approximately 50%, and material waste minimized. However, it has requirements for transportation and lifting equipment.
• Quality: The product quality is high and controllable, with factory production ensuring component precision and quality stability.
• Environmental Protection: It reduces resource consumption and construction waste emissions, with some regions seeing a reduction in construction waste by over 70%. It significantly lowers noise, dust, construction waste, and traffic congestion at construction sites, reducing disturbances to the public.

Technical System: The main structure relies on nodes and joints to form an integrated whole, meeting requirements during both use and construction phases. The connection details employ steel bar connections, including grouted sleeve connections, lap connections, and welded connections, with three types available. Supporting component technologies, such as integrated technologies for doors, windows, and wet rooms, as well as one-time installation and decoration technologies, are also distinctive features. The force transmission and collaborative work of prefabricated components are the core research areas, with Chinese scientists conducting in-depth research in this field.

Design Principles: It adheres to principles of reasonable force distribution, reliable connections, convenient construction, fewer specifications, and more combinations, achieving generalization, modularization, and standardization in building structural design to meet the needs of different regional housing types.

Development: China's prefabricated concrete technology began in the 1950s, undergoing stages of development, stagnation, and recovery. After the 21st century, various structural systems have emerged. Chinese-made prefabricated houses are selling well overseas, and the global modular building market size is expected to exceed $142.8 billion by 2030.