According to the traditional thinking of personalized customization, precast buildings may have a unified style.

In March 2019, the construction market supervision department of the Ministry of housing and urban rural development issued the key points of work in 2019, which required to carry out the pilot of precast steel structure housing.

The industry standard technical standard for precast steel structure residential buildings was also officially implemented on October 1, 2019.

The new green modular building system is bound to be widely used in buildings in the future.

Fully assembled integral frame system the assembled integral frame structure system is a cast concrete structure with all or part of the main stressed components columns, beams and plates (such as precast columns, composite beams and composite plates) as precast components..

The goal of the new green assembly building system based on steel structure is to minimize the impact on the environment and maximize the resource efficiency in the whole building life cycle from design, production, transportation, construction, use to scrapping, so as to make the building component system develop in the direction of safety, environmental protection, energy conservation and sustainable development.

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It not only has a high degree of industrialization, but also has good seismic performance, high building quality and short construction cycle.

Form a modular, standardized and integrated system.

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The system prefabricates the enclosure components that are difficult to be cast in situ at the construction site in the factory, and then transports them to the site for external installation.

With the continuous integration of Internet technology and construction industry, precast buildings can also be customized in the future.

Future customized precast buildings based on Network The main modes of NCAB include: the networking within the customization environment to realize the residential assembly in the customization process; the networking between the customization environment and the whole assembly enterprise to realize the assembly transaction between the customization environment and various subsystems such as the enterprise industrial chain information system; the networking of the industrial chain between enterprises to realize the sharing, combination and optimal utilization of construction resources of upstream and downstream enterprises in the industrial chain 。 5.

After the nodes and internal vertical main load-bearing structures are cast in situ, which is conducive to the waterproof and impermeability of the outer wall and improve the construction efficiency.

At present, China’s precast buildings mainly promote the main structure, and the development speed of decoration is slow.

The disadvantages are low integration, limited structural form, lack of flexibility in design, and no promotion of modularization.

The two complement each other.

Precast decoration will reshape building decoration.

There are two connection modes of beam column joints.

The cast frame cast-in-situ shear wall system has good seismic performance.

Fully assembled integral shear wall system assembled integral concrete shear wall structure refers to a reinforced concrete shear wall structure formed by integral connection, which is a vertical load-bearing and horizontal lateral force resisting system composed of precast concrete shear wall panel members and cast-in-situ concrete shear wall.

One is to use post pouring for the joints of one-dimensional beam column members; Second, the post pouring method is adopted for the node prefabrication and connection points of two-dimensional and three-dimensional beam column components.

Of course, the cost of personalized customization is closely related to the construction scale.

From the precast steel structure residential station to the new outlet of the industry, the newly-built precast buildings in China have reached 290 million square meters in 2018, while the steel structure residential does not enjoy the dividend of the rapid development of the industry.

Since then, the Ministry of housing and urban rural development has successively approved the pilot of precast steel structure housing in seven provinces.

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Precast frame cast-in-situ shear wall system precast frame cast-in-situ shear wall system refers to precast members for beams and columns, and cast-in-situ for shear walls.

This is easy to be unified and changeable, and convenient for production and construction, and also brings more freedom of assembly and construction to designers and builders.

In the future, it will be the integrated development of precast building structure and decoration.

In the future, the trend of the first mock exam is to change from closed system to open system.

Green modular buildings are the most important symbol of the development of building industrialization and industrial modernization.

Precast components: shear wall, laminated floor slab, stairs, internal partition wall, etc; System features: high degree of industrialization, complete room space, no exposed beams and columns, high construction difficulty, high cost, partial or full prefabrication can be selected, and the space flexibility is general; Applicable height: high rise and super high rise; Applicable buildings: commercial housing, affordable housing, etc.

Precast components: exterior walls, laminated floors, balconies, stairs, laminated beams, etc; System features: the vertical stressed structure adopts cast-in-situ, the external wall hanging plate does not participate in the stress, the construction difficulty is low, the cost is low, and it often cooperates with the construction of large steel formwork; Applicable height: high rise, super high rise; Applicable buildings: affordable housing, commercial housing and office buildings.

With the gradual improvement of standard system, technical system and supporting policies, steel structure residence will stand at the new outlet of industry development in the future.

Construction industry is one of the three high energy consuming industries, so we must practice the road of green development.

Precast building is not only the industrialization of main structure, but also the industrialization of interior decoration.

It can be devotes to developing standardized function blocks, designing unified modules, and integrating personalization.

“External and internal pouring” PCF (precast external wall panel) shear wall system “external and internal pouring” PCF shear wall system refers to that the stressed components of the main structure are cast-in-situ and the non stressed structure is in the form of external hanging.

At present, China is dominated by the respective R & D systems of enterprises and research institutions, and the technology is still a closed system.

Fabricated steel structure residence has the characteristics of modularization and standardization.

Green is the most important symbol of precast buildings.

With the rapid development of industrial Internet, it will bring new changes in the network of precast building customization to the construction industry.

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Precast members are connected through cast-in-situ shear walls and superimposed floors, columns or floors can also be cast-in-situ, and external walls can be flexibly connected with external hanging plates.

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Compared with other construction methods, it has more obvious comprehensive advantages.

The outline of China’s 13th five year plan puts forward that we must firmly establish and implement the new development concept of innovation, coordination, green, openness and sharing, in which green development has become the main tone for the implementation of the outline.