Nowadays, in the construction industry, various new concepts and new models are constantly emerging, such as organic integration of industrial chain, parallel assembly engineering, low-energy prefabrication, green assembly, networked construction and virtual optional assembly. Prefab building is the house built by industrial production method. It is the house built by prefabricating part or all components of the house in the factory, then transporting them to the construction site and assembling the components through reliable connection. It is called industrial house or industrial house in Europe, America and Japan. It has the advantages of high efficiency, high precision, high quality, high degree of industrialization, high degree of standardization, high seismic performance of buildings, high energy-saving performance, large usable area, etc.
Compared with traditional cast-in-place reinforced concrete and masonry buildings, prefabricated buildings adopt the construction method that produces building components including beams, slabs, columns and external walls in the factory, and transports them to the site after maintenance and acceptance. It breaks the traditional construction method of “Qin Brick, Han tile” for thousands of years, and completely subverts traditional architecture by “standardization” of building components and “industrialization” of construction methods.
The improvement of construction method also brings the improvement of operation mode and construction concept. In terms of operation mode, the traditional construction phenomenon of “people go with the project and materials are piled everywhere” is broken. Instead, the components and components used in the construction are basically completed in the factory. The construction site does not need too many workers and equipment, and it also reduces the “rushing around”. In the construction concept, it stresses the quality and safety in the first place, to achieve saving and fast, “saving” to save costs; “Fast” should pursue construction speed. Its appearance makes the industrialization of buildings develop towards the direction of green, energy saving and environmental protection gradually.
In the future, the construction system and industrial system of prefabricated buildings in the world will go beyond the scope of the existing enterprise mode and industrial form. As one of the products of the transformation of the production mode of the construction industry, prefabricated buildings will become the next outlet of the construction industry.