With the advantages of low-carbon, environmental protection and resource conservation, this way avoids the generation of a large amount of construction waste and the waste of water and wood.
The development of prefabricated buildings in China can be roughly divided into three stages: since the 1950s, China has basically copied the Prefabrication Technology of the former Soviet Union and Eastern Europe to develop prefabricated buildings, began to implement standardization, industrialization and mechanization in the national construction industry, vigorously developed prefabricated buildings, and achieved certain results.
in addition, there are more complex prefabricated integral kitchen and bathroom, prefabricated garbage trough and prefabricated GRC composite components.
At present, the commonly used prefabricated buildings have three forms: shear wall structure, frame structure and frame shear wall structure.
The present life of prefabricated buildings is different from the characteristics of weak earthquake resistance, poor wind resistance and waterproof effect in the early stage of the development of prefabricated buildings in China.
The limbs have blood (various pipelines), meat (concrete) and bones (reinforcement).
Although the prefabricated buildings are produced in batches, the architectural style can be personalized like cars, and the indoor layout can be adjusted at will according to customers’ hobbies.
Perhaps so many professional terms are difficult to understand, so it can be understood vividly that prefabricated buildings are built in the same way as building blocks.
Prefabricated components do not simply split the building into units.
Why are prefabricated buildings so popular in recent years? What is the origin of prefabricated buildings? Now let me unveil her mystery for you.
A large number of prefabricated buildings were demolished in the trend of the rapid development of cast-in-place structures.
The length and thickness of the limbs are symmetrical (appropriate size).
By the end of 2015, the cumulative construction area of prefabricated buildings in China was about 80 million square meters.
However, due to the serious lag of technical localization, universality and seismic research of prefabricated structures, prefabricated buildings, such as those with prefabricated hollow slabs as floors, were damaged and collapsed in the earthquake, resulting in huge loss of life and property, which once made everyone talk about “prefabrication” and changed color.
The types of prefabricated components that make up prefabricated buildings commonly include prefabricated columns, prefabricated beams, laminated floors, prefabricated shear walls, prefabricated exterior wall panels, prefabricated stairs, prefabricated balconies, prefabricated air conditioning panels, etc.
The development of modern prefabricated buildings is inseparable from industrialization..
In addition to considering the standardization required for mass production, size restrictions during transportation and the requirements for convenient construction during installation, building splitting also needs to consider the normal use of the building after establishment, such as power lines, water pipes, ventilation exhaust pipes, decoration and other factors.
The stress, waterproof and convenient production and installation shall be considered for the connecting nodes.
The State takes the development of prefabricated buildings as an important part of the “13th five year plan”.
The prefabricated building is equivalent to the cast-in-situ building, and even has better effect in waterproof and quality.
Once the joints are strained, people will get sick, and prefabricated buildings can not be used normally.
In order to increase the integrity of prefabricated buildings, cast-in-situ concrete connection is often used between prefabricated components, and the connection node is the most key factor affecting the quality of prefabricated buildings.
Due to the characteristics of fast construction speed and reliable quality, it has become the best choice for many western countries to solve the problem of housing shortage after World War II, and quickly realized large-scale batch construction.
As early as 1912, Le Corbusier (France), a master of modern architecture, put forward the idea of “building a house like making a car”.
Prefabricated buildings have the same construction method as building blocks, but the technical difficulty is much more complex than building blocks.
The nodes of prefabricated buildings are like the joints of human bones, which bear the operation of all limbs.
The precast concrete component here refers to the concrete component pre fabricated in the factory or on site.
Europe, the United States, Japan and other economically developed countries have gradually formed a more mature industrial chain and technical system by establishing a perfect universal and integrated component system.
Prefabricated buildings are no exception.
In the future, prefabricated buildings will no longer be cold, dead, fragile and short-lived, but follow the wishes of customers and become more colorful, solid and durable.
Provinces, cities and regions have taken actions to introduce their own local policies and implement projects.
The previous generation of prefabricated buildings prefabricated buildings originated in Europe in the 19th century.
Buildings need to shelter from wind and rain, and be safe enough in case of earthquake.
Prefabricated shear wall structure is mainly used in residential buildings, such as government guaranteed housing, commercial housing, etc; Prefabricated frame shear wall structure and prefabricated frame structure are mainly used in public buildings, such as teaching buildings, gymnasiums, shopping malls and so on.
With the continuous advancement of China’s national strategy of advocating the development of low-carbon economy, building a resource-saving and environment-friendly society, prefabricated buildings have ushered in new development opportunities.
The application of prefabricated buildings is very common.
With the promotion of national strategy, the design theory, production technology and construction technology of prefabricated concrete structure are becoming more and more mature, and the prefabricated building is developing rapidly.
Now it seems that the idea is quietly coming true.
In addition, the shape of each limb is relatively fixed (standardized).
What is a prefabricated building? Prefabricated buildings refer to concrete buildings assembled by precast concrete components through reliable connection, including prefabricated integral concrete buildings, fully assembled concrete buildings, etc.
Building blocks are precast concrete components, and built building block projects are prefabricated buildings.
In the opinions on Further Strengthening the management of urban planning and Construction issued by the State Council this year, it is stated that the proportion of prefabricated buildings in new buildings will increase from 3% ~ 5% to 30% in about 10 years.
At the beginning of the 21st century, researchers and designers learned painful lessons and gradually explored the road of prefabricated architecture suitable for China’s architectural style and regional characteristics on the basis of referring to the development experience and technology of foreign developed countries.
In short, prefabricated components are like the limbs of the human body.
After the 1980s, China’s prefabricated buildings were basically at a standstill.
Prefabricated buildings make the construction of houses more efficient.
