The reporter saw in the workshop of Longxin Group Jiangsu Construction Industry Co., Ltd.

If there are no less than 100 people on the traditional construction site, but one person can do more than one job through industrial training, and lifting, formwork and reinforcement are taken into account, the employment is reduced by more than half, and the construction period is reduced from more than two years to one year.

In terms of construction management, the probability of safety accidents is low because there are few cast-in-situ operations during the construction of precast buildings..

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The hoisting site of PEC components in a community in Huzhou, Zhejiang Province.

After the precast components are transported to the site, they will be poured.

Shanghai, Shenzhen and other leading cities are moving towards higher goals, and some provinces have accelerated significantly.

After the production of these precast components is completed, they are transported to construction sites throughout the country for later construction and assembly.

Fabricated precast components have achieved carbon reduction in all aspects of the life cycle, such as construction, interior decoration, and later use.

During the construction process, the precast components are installed in dry construction, rarely using sand, stone, cement and other materials, which fundamentally avoids dust flying, waste accumulation, noise and other pollution problems.

China’s industry generally regards 2013 as the first year of China’s precast building development.

In the Opinions of the CPC Central Committee and the State Council on Further Strengthening the Management of Urban Planning and Construction issued in February of that year, it was proposed that the proportion of precast buildings in new buildings should reach 30% in about 10 years.

Just scan the QR code to understand the purpose and production process.

The comprehensive parking building project of Jiangsu Nantong Government Affairs Service Center is a fully assembled building with an area of about 50000 square meters.

No piles of garbage can be seen, no flying dust can be seen, and no harsh noise can be heard for a long time.

At the beginning of this year, the Ministry of Housing and Urban Rural Development issued the “Fourteenth Five Year” Construction Industry Development Plan, which requires that the policy system and industrial system for the coordinated development of intelligent construction and new building industrialization should be basically established, and the proportion of precast buildings in new buildings should reach more than 30%.

On the premise of ensuring the construction quality, the safety of precast buildings is guaranteed.

According to the data of the International Cooperation Committee for Environment and Development of China, more than one third of the total energy consumption of the whole society is building energy consumption.

As early as the 1960s, western developed countries began to use it widely.

Chen Zuxin said that the technical level of precast buildings is very mature.

Whether the building mode of “building blocks” is safe is an important issue of public concern.

In recent years, relevant policies have been introduced intensively.

Since 2016, precast buildings have become the main focus to promote the transformation and upgrading of the construction industry.

Experts said that prefabrication of components in the factory can reduce wall cracking, leakage and other problems, and effectively improve the overall safety level of residential buildings.

Assembly is not just “erection”.

For example, Zhejiang Province proposes that by 2025, precast buildings will account for more than 35% of new buildings; Hainan Province proposes that by 2030, the precast building area will account for more than 95% of the new building area.

“Standardization of design, factory prefabrication of components, mechanization of construction”, the “industrialization of Chinese architecture” envisioned by Liang Sicheng, a famous architect many years ago, is now becoming a reality.

Floor slab hoisting site of a residential area in Huzhou, Zhejiang.

Water saving per square meter is 20.5%, carbon reduction is 7.5%, and waste emission is reduced by 77.7%, which greatly alleviates the problem of energy consumption in traditional buildings.

The interviewee provided the picture: “Do it indoors outdoors, do it on the flat ground at high altitude, and do it with dangerous machines.” Chen Zuxin, chairman of Longxin Group, introduced that unlike the traditional way of “design institute drawing to site construction”, the precast building of “factory building parts, on-site house building” has subverted the construction concept, reduced the labor intensity of workers, changed the on-site working environment, and turned the construction farmers into modern industrial workers, which is in line with the development direction of building industrialization.

All kinds of components are “one thing, one code”.

The wallboards, stairs and other components ordered from the factory in advance are neatly stacked on the construction site, and the workers “assemble” them like “building blocks”, building after building.

in Jiangsu Nantong Modern Construction Industrial Park that the steel bars and concrete were poured and finally made into floor panels, all of which were completed on the production line.

This is the precast building.

Leading the transformation of building methods: Compared with the disorder of traditional building construction sites, being greener and safer is the first impression of precast construction sites.

In September 2016, the General Office of the State Council issued the Guiding Opinions on Vigorously Developing Precast Buildings, which proposed that the Beijing Tianjin Hebei, Yangtze River Delta, and Pearl River Delta should be the key promotion areas, other cities with a permanent population of more than 3 million should be the active promotion areas, and other cities should be encouraged to develop precast concrete structures, steel structures, and modern wood structures according to local conditions.

After decades of development, it has entered a relatively mature and perfect stage.

The latest data from the Ministry of Housing and Urban Rural Development shows that in the first half of this year, newly started precast buildings accounted for more than 25% of the newly built building area.

Fabricated architecture is not a new thing.

Experts said that since 2016, after many years of demonstration and market cultivation, the development of precast buildings has laid a solid foundation.

As a major change in the construction method, the drawings provided by interviewees have unique advantages in saving resources and energy.

This year, the State Council and relevant ministries and commissions issued a number of guidance documents, marking the beginning of the development of precast buildings in China.

According to the latest data from the Ministry of Housing and Urban Rural Development, in the first half of this year, newly constructed precast buildings accounted for more than 25% of the total area of new buildings, with a total area of 2.4 billion square meters.

It is understood that precast buildings have obvious saving or improvement in construction period and labor compared with traditional buildings.

The reporter from “Xinhua Viewpoint” found that the construction industry is quietly undergoing important changes: through continuous integration with advanced manufacturing technology and new generation information technology, precast buildings are increasingly popular.