Like Lego, the precast building will prefabricate some or all components in the factory and then transport them to the construction site for assembly.

Not only does the component itself continuously reduce the consumption of cement, sand, stone and steel through the industrial production mode, but also reduces the environmental pollution at the construction site.

At the same time, many components can be reused, It also reduces the possibility of secondary waste pollution.

Today, I’d like to share with you the analysis outline of precast buildings from the perspective of Party A 01 Overview of precast buildings 02 Interpretation of precast policies 03 Key points of precast design 04 Analysis of precast costs 01 Overview of precast buildings/management sharing.

Assembly is not just “erection”.

Therefore, such industrialized and industrialized buildings have been widely used in Europe, America, Japan and other countries and regions.

02 Precast policy interpretation/management sharing: from the perspective of precast buildings in China, the planning of precast buildings has been intensively issued since 2015: the Evaluation Standard for Industrialized Buildings was issued at the end of 2015, and it was decided to promote precast buildings nationwide in 2016 and make breakthroughs; On November 14, 2015, the Ministry of Housing and Urban-Rural Development issued the Outline for the Modernization of the Construction Industry, which plans that precast buildings will account for more than 20% of new buildings by 2020 and more than 50% of new buildings by 2025; On February 22, 2016, the State Council issued the Guiding Opinions on Vigorously Developing Fabricated Buildings, which required that precast buildings such as precast concrete structures, steel structures and modern wooden structures should be developed according to local conditions, and strive to make the proportion of precast buildings in the area of new buildings reach 30% in about 10 years; The government work report on March 5, 2016 proposed to vigorously develop steel structures and precast buildings and improve the standards and quality of construction projects; On July 5, 2016, the Ministry of Housing and Urban-Rural Development issued the “List of precast construction technology demonstration projects of the Ministry of Housing and Urban-Rural Development’s 2016 science and technology project plan” and published the list of precast construction technology demonstration projects of science and technology project construction in 2016; On September 14, 2016, the State Council held an executive meeting of the State Council, which proposed to vigorously develop precast buildings to promote industrial restructuring and upgrading; On September 27, 2016, the State Council issued the Guiding Opinions of the General Office of the State Council on Vigorously Developing Precast Buildings, which clearly defined the key areas for vigorously developing precast buildings and steel structures, the proportion of precast buildings in new buildings in the future, and the key development cities.

Second, the construction industry and industrialization trend The construction industry and industrialization are the use of modern management mode to realize the generalization of building components and the assembly and mechanization of on-site construction through standardized architectural design and modular and industrialized component production.

There are two main development trends that have contributed to the promotion of precast buildings nationwide, The trend of energy conservation and environmental protection The precast building responds well to the requirements of national energy conservation and environmental protection.

As long as the precast housing components are transported to the construction site, we can imagine the beams, slabs, columns, walls and other pre-made components as Lego blocks, and we only need to put them together at the construction site.

Halfen Frimeda

The emergence and development of precast buildings have its inevitability.

It is the fundamental change of the construction production mode from extensive production to intensive production.

With the development of modern industrial technology, building houses can be manufactured in batches and in sets, just like machine production.

Building houses is more and more like building cars.

The main components of the precast building are manufactured in the component processing plant and transported to the project site for assembly.

Since the policy requirements for precast buildings are different across the country, the author mainly analyzes and interprets the precast building policy in combination with the relevant policies of the country and Guangdong Province — the national policy for precast buildings is mainly defined by the Standard for the Evaluation of precast buildings (GB/T51129-2017): precast buildings assembled by precast parts on the construction site; Definition of assembly rate: the comprehensive proportion of precast parts and components used for the main structure, enclosure wall, internal partition wall, decoration and equipment pipeline within the scope of building evaluation (above the outdoor floor).
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This is the precast building.

After the precast components are transported to the construction site, the reinforced concrete will be overlapped and poured to ensure the safety of the assembly room.