The wooden frame houses used in the 17th century immigration period to the Americas are a kind of prefabricated construction. The Crystal Palace, built in London in 1851 with an iron frame and glass panels, was the first large prefabricated building in the world. After the Second World War, European countries and Japan and other countries have serious housing shortage, urgent need to solve the housing problem, and promote the development of prefabricated buildings. By the 1960s, prefabricated buildings were widely promoted. Prefabricated buildings are generally divided into five types according to their structural forms and construction methods.
In 2021, China's new prefabricated construction area reached 740 million square meters, an increase of 18% from 2020, accounting for 24.5% of new construction area.
peculiarity
1. A large number of building parts are produced and processed by the workshop, and the types of components mainly include: outer wall panels, inner wall panels, laminated panels, balconies, air conditioning panels, stairs, prefabricated beams, prefabricated columns, etc.
2. A large number of on-site assembly operations are greatly reduced than the original cast-in-place operations.
3. The use of architecture, decoration integration design, construction, the ideal state is that the decoration can be carried out simultaneously with the main construction.
4. The standardization of design and information management, the more standard components, the higher the production efficiency, the corresponding component costs will decrease, with the digital management of the factory, the cost performance of the entire prefabricated building will be higher and higher.
5. Meet green building requirements.
6. Energy saving and environmental protection.
