The future or mainstream of assembly technology building
In recent years, the state and local governments have continuously promulgated relevant policies to promote assembled buildings and vigorously develop assembled concrete structures, steel structures and modern wooden structures. The Ministry of Housing and Construction's "13th Five-Year Plan of Action for Assembled Buildings" has determined the development goal of assembled buildings in 2020: the proportion of assembled buildings in new buildings in China has reached more than 15%, and the key areas have reached 20%. Above. In the future, will assembly building become the mainstream trend of China's real estate industry?
Prefabricated interior and exterior wall panels, floor slabs, roof panels, staircase sections and other supporting components are assembled into a fully assembled slab-type structure house with load-bearing wall panels as the main part. Building a house like building blocks, what is the advantage of the assembled building?
Building a house is as simple as building blocks. Does it sound "dazzling"? At present, such buildings have begun to appear in many cities.
Zhang Dawei, chief analyst of Central Plains Real Estate, said that the policy of fabricated buildings had been implemented in many cities. In fact, the assembly building is to wall panels, balconies, air conditioning panels including stairs and so on, all by workshop production and processing, and then to the scene to do a splicing on the line.
As early as 2016, the General Office of the State Council issued the Guiding Opinions on Developing Assembled Architecture Vigorously, putting forward that the three major cities of Beijing, Tianjin, Hebei, Yangtze River Delta and Pearl River Delta should be the key areas to promote, other cities with a permanent population of more than 3 million should be the active areas to promote, and the rest should be encouraged to develop the assembling concrete structures, steel structures and modern wooden knots according to local conditions. Construction and other assembly building. It will take about 10 years to make the proportion of assembled buildings in the new building area reach 30%. Subsequently, various places followed up. At present, assembly construction projects have been carried out in Beijing, Shanghai, Shenzhen, Jiangxi and Xinjiang.
So what are the benefits of fabricated buildings? Su Yunshan, Director of the Department of Building Energy Conservation and Science and Technology of the Ministry of Housing and Construction, introduced that assembly building is an important focus of practicing the concept of green development in the field of construction. Compared with the traditional cast-in-place buildings, the assembled buildings can shorten the construction period by 25%-30%, save water by 50%, reduce masonry plastering mortar by 60%, save wood by 80%, reduce construction energy consumption by 20%, reduce construction waste by more than 70%, and significantly reduce construction dust and noise pollution. Hongyi Machinery can make prefabricated partition board with thickness of 75mm-150mm, enlarge practical area, compound JG/T169-2005 standard, fire prevention, sound insulation, moisture proof, environmental protection, strong stability, easy installation and other advantages. It has been constructed and produced in many countries, and has been verified by its quality.
According to the requirement of "Radionuclide Limit of Building Material", assembling building slab does not contain harmful substances, and largely replaces the traditional use of green brick and red tile, reduces the pressure on land resources caused by masonry in use, and produces a large amount of fly ash for masonry cement construction projects. Pressure of air dust. As an environmental protection building material, assembly building meets the requirements of modern building environmental protection.
When did assembled buildings become mainstream?
According to the data released by the Ministry of Housing and Construction at the end of last year, in the first 10 months of 2017, about 127 million square meters of new assembled construction projects have been implemented nationwide. In 2016, the total area of newly constructed and assembled buildings in China was 114 million square meters, an increase of 57% over the previous year, accounting for 4.9% of the total area of newly constructed buildings in cities and towns. All 31 provinces (autonomous regions and municipalities) have issued relevant policy documents to promote the development of assembly buildings, and the overall development trend has been formed.
It is predicted that assembly building will become the mainstream trend of China's real estate industry. In response, Zhang Dawei, chief analyst of Zhongyuan Real Estate, said that it is indeed a trend to shift from extensive cast-in-place operations to assembly operations.
Zhang Dawei pointed out that assembly building has just become the mainstream in the first-tier cities. From the national point of view, (because) the real estate regulation includes the development of urbanization, and the second-tier and third-tier cities with the largest share of the real estate market have gradually begun. In the 100% market share, most of the shares are still cast-in-place and will gradually occupy the share in the direction of assembly. From a trend point of view, it is not far from assembly to become the mainstream of the market.
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