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In the future, 80% or 90% of xiong'an new area will be prefabricated buildings

in the future, 80% or 90% of xiong'an new area will be prefabricated buildings

July 17, 2017

[China paint information]

old bottles of new wine, prefabricated buildings start again

the news that "in the future, 89% of xiong'an new area will be prefabricated buildings" has made prefabricated buildings the focus of public opinion

Huang Hui, 79, was the chief architect of the Design Institute of Beijing Housing Construction Corporation, an important driving force of prefabricated buildings in Beijing in the 1980s, and participated in the struggle to create the most brilliant period of prefabricated buildings in China

talking about the development of prefabricated buildings, she cut to the chase: "we should build a complete industrial chain."

assemble houses like Lego

the so-called prefabricated building is a building assembled on the construction site with prefabricated parts. Because standardized design, factory production, assembly construction and information management are adopted, the precision of prefabricated components is particularly high. The construction of prefabricated buildings is less restricted by climatic conditions, and the construction speed is fast. It can save resources and energy, reduce construction pollution, save labor and improve construction quality

prefabricated building was the initial mode of housing industrialization exploration in China

"in the 1980s, we have built a floor in seven days." Huang Hui recalled that at that time, under the system with the government as the main body, a small private enterprise found vitality on the ruins of the factory building, many provinces and cities across the country established a variety of housing industrialization production chains. Although the industrialization level, raw materials, joint and node practices are different in various regions, the product differences are not large. Beijing, Shanghai, Tianjin, Sichuan, Hunan and Zhejiang all have their own product systems and have also built some residential areas. The third component manufacturing plant of Beijing Housing Construction Corporation once became the most advanced enterprise in Asia in terms of production capacity and technology. According to incomplete statistics, in the residential districts built in blocks at that time, Beijing has built about 10 million square meters of multi-storey and high-rise residential buildings, and has basically complete professional design, production, construction entities and R & D platforms. The earlier Diplomatic Apartments in Beijing adopted the assembled integral reinforced concrete two-way frame structure

"at that time, China's building standardization and industrialization had developed to a considerable level, which was very small compared with the development level of developed countries. Especially in the prefabrication and installation of building accessories, it had reached a high level." Huang Hui said

there is still a lack of research and development to achieve adaptation to local conditions

but from the late 1980s to the early 1990s, prefabricated buildings suffered a "Waterloo" in China - production lines were quietly demolished, and at the same time, prefabricated houses across the country almost disappeared instantly

in addition to the impact of the personalized, Europeanized and luxurious market demand wave of commercial housing, an important reason is that technical quality problems such as residential waterproofing are gradually exposed. In Huang Hui's view, "perhaps, insufficient research on the seismic capacity of prefabricated housing and the introduction of prefabricated buildings from the Soviet Union without localization are the fundamental causes of death."

according to the data of the Ministry of housing and urban rural development, at present, the proportion of prefabricated buildings in China is only 5%. In Germany, Singapore and other countries, prefabricated buildings account for about 80%, especially in Japan, a country with many earthquakes. After introducing the technology of the Netherlands and other European countries, large enterprises such as Maeda and Toyota in Japan vigorously carry out secondary research and development to achieve localization, and put forward the final slogan of "building a house like building a car", If the elastomer used in the plastic composite cover for high-volume injection cannot be maintained at 121 ℃± 2 ℃ for 30min, great efforts should be made to train skilled workers to refine the products, and enterprises should be the main body to build a complete industrial chain

after 2007, China began a new round of housing industrialization

"nowadays, a hundred flowers bloom in the prefabricated construction market. The simple Lego building block is not the whole of the prefabricated construction system. The technology has gradually changed from simply imitating Japan to introducing, digesting, absorbing and innovating." Tangyujiao, head of the new house of Beijing Kaisheng Building Materials Engineering Co., Ltd. of the China Academy of Building Materials Science (hereinafter referred to as the General Academy of building materials), told that the prefabricated building of the General Academy of building materials - Youke house has gone abroad, and the territorial convenience of steel structures and the adaptability of plates to local conditions are one of the major features

the senior dormitory for Algerian STG employees located in the Sahara desert is a demonstration site for the landing of Unocal houses. The perennial temperature in this area is as high as 50 degrees Celsius. The technical accumulation of the General Institute of building materials for many years has laid a reliable foundation for the customization of prefabricated buildings. Compared with other buildings in the same area, this building has obvious thermal insulation effect. In the face of the villa group project in Laos, in order to adapt to the local rainy and humid climate, technicians adjusted the proportion of plates

on February 6, 2016, several opinions of the CPC Central Committee and the State Council on Further Strengthening the management of urban planning and construction proposed to develop new construction methods. Increase policy support, and strive to use about 10 years to make prefabricated buildings account for 30% of new buildings. Actively and steadily promote steel structure buildings. Advocate the development of modern wood structure buildings where conditions permit

in March 2016, vigorously developing prefabricated buildings was written into the premier's government work report for the first time

on September 27 of that year, the general office of the State Council issued guidance on vigorously developing prefabricated buildings, proposing to take Beijing Tianjin Hebei, Yangtze River Delta and Pearl River Delta as the key promotion areas, other cities with a permanent population of more than 3million as the active promotion areas, and other cities as the areas to encourage the promotion, and develop prefabricated concrete structures, steel structures, modern wood structures and other prefabricated buildings according to local conditions. At the same time, we will gradually improve laws and regulations, technical standards and regulatory systems, and promote the formation of a number of large-scale production enterprises of design, construction, parts and components, general contracting enterprises with modern assembly and construction level, and corresponding professional skill teams

industry revitalization calls for the whole industry chain

in Tang Yujiao's view, with the gradual advancement of China's prefabricated construction industrial policy and the adjustment and reform of housing industrial structure, prefabricated construction will usher in new development opportunities and face new challenges

"if enterprises fight their own battles, fight for prices, ignore quality, don't take a long-term view, and buy and sell with one hammer, then the industry can neither develop healthily nor develop for a long time." Tang Yujiao believes that in addition to technological breakthroughs and guidelines of policies and regulations, the development of prefabricated housing needs a supporting platform of industrial linkage. She introduced that as a new force in the market, while technological innovation and market development, Beijing Kaisheng Building Materials Engineering Co., Ltd. and the productivity promotion center of the building materials industry under the General Academy of building materials joined hands to actively organize the alliance of upper and lower resource industry chains while using scientific research advantages to enhance the technical strength of small and medium-sized enterprises

Tang Yujiao said that although the climate has not yet formed, although there is a lack of high-quality skilled workers, and although there is still much room for progress in various professional technologies, she hopes to jointly carry out engineering cooperation and joint technology development to help industrial upgrading and development

"in the 1980s, the Beijing Municipal Government deployed troops to set up the Beijing Housing Construction Corporation and established a complete industrial chain of housing industry construction." Huang Hui's analysis found that the industrialization of large-scale reinforced concrete collective housing in many developed countries has been rising since the 1960s. It should be powered on regularly. The reason lies in the scientificity of its planning and operation process. "Nowadays, the development of prefabricated buildings in China also requires the analysis and research of the procedures and all main parameters of the whole industrial chain, the proposal of a planning scheme, and the planning of the whole industrial chain through experiments, tests and demonstrations."

at present, housing is the main application field of prefabricated buildings in China. According to Huang Hui, in terms of service objects, the composition of users and the needs of the same user are changing at any time, just like the housing and it industries. However, the essence and production operation of housing and it products are very different. Housing has high cost and long service life, which makes it difficult to upgrade, update or even replace at any time. "In the planning, the reliability of the investigation basis, the foresight of the objectives and the scientificity of the trade-offs in the long-term and short-term needs, costs, benefits and technical feasibility all play a decisive role in the success or failure."

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