by On February 29, CRCC’s first green building industrial park in Hainan Province was put into operation in jinjingang Economic Development Zone, Lingao County, Hainan Province.
The industrial park is equipped with 5 internationally advanced production lines of precast building components, with an annual design capacity of 100000 cubic meters.
China railway construction completed its first green building industrial park in Hainan Province on the 29th.
Photo by Wang Ziqian at present, China is vigorously developing precast buildings.
Combined with the construction of free trade port, Hainan also takes precast buildings as an important measure to promote the transformation and upgrading of the construction industry and one of the important supporting work of carbon peak and carbon neutralization, and lists them as a landmark project for the construction of national ecological civilization pilot area.
Compared with traditional building methods, precast building has many advantages: it will greatly reduce dust, noise and sewage during on-site operation, and can save 80%, 70%, 20%, 70% and 20% of water, materials, time and land, which is very in line with the national energy conservation and emission reduction goal.
In the urban area of Haikou, a twin tower with a height of more than 100 meters uses an all steel structure and climbs rapidly.
According to the owner’s representative of the project, the total volume of the project is 173000 square meters.
The whole steel structure is adopted to save construction period, cost and space.
“Compared with the concrete structure, the project cost is saved by 10% and the house acquisition rate of the project is increased by 3%.” The reporter learned from the Department of housing and urban rural development of Hainan province that Hainan has continuously improved the top-level design architecture at the provincial level such as supporting policies, standard system, capacity layout and talent team construction of precast buildings since 2018.
The project area determined to be constructed by assembly in the province in 2018, 2019 and 2020 will be 824.35 million square meters, 435.5 million square meters and 11 million square meters respectively, which has developed rapidly in the past three years with the trend of doubling year by year.
By the end of 2021, the precast building area has exceeded 20 million square meters, which is expected to double year by year for four consecutive years.
At the same time, due to the use of precast buildings, Hainan Province will reduce the source of construction waste by about 220000 tons in 2020.
Liu Lianwei, deputy director of Hainan Provincial Department of housing and urban rural development, said in an interview with the media that precast buildings not only meet the development requirements of Hainan’s strategy of building a national ecological civilization pilot area, but also have the advantages of high degree of industrialization, short construction cycle, convenient transportation of components and parts, recyclable utilization in the whole life cycle, green environmental protection and so on.
At present, the proportion of precast buildings in new precast buildings still has great room for improvement.
Hainan Province is improving the production capacity layout of precast buildings and promoting base construction.
According to the development plan for the modernization of construction industry (precast buildings) in Hainan Province (2018-2022), in addition to the existing precast building industrialization bases in Chengmai, Ding’an, Wanning and Sanya, in principle, the new production capacity of precast building components will be centrally distributed to Lingao gold port development zone.
Zhang Yu, deputy general manager of China Railway Construction Construction Development (Hainan) Co., Ltd., said that at present, its main business is cast PC components.
In the next step, it will focus on the research, development and production of cast whole industry chain products, including laminated plates, stairs, shear walls, partitions, balconies, etc.
the products are based on the south of the sea, facing the Great Bay area of Guangdong, Hong Kong and Macao and radiating Southeast Asia.
According to the official introduction, at present, there are 24 component production bases in Hainan Province, including 18 concrete precast component production bases, with a design annual production capacity of about 1.57 million m3 / year; There are 6 steel member production bases with a design annual capacity of about 340000 tons / year.
In addition, 6 are under construction and 4 are proposed.
The housing and Construction Department of Hainan province continues to promote the development of precast construction industry from the aspects of policy support, talent training and government supervision.
In terms of policy, the implementation opinions of the people’s Government of Hainan Province on vigorously developing precast buildings issued in 2017 stipulates the plot ratio incentive policy, which specifies that commercial housing projects built in the precast way will meet the national standards for the identification of precast buildings by the end of 2020, The building area that meets the requirements of precast buildings can be excluded from the floor area ratio accounting according to a certain proportion (no more than 3% of the planned aboveground building area).
Since then, Hainan Province has extended this policy until December 31, 2022.
At present, Hainan has formulated and issued the responsibility assessment measures for the development objectives of precast buildings in Hainan Province, established a normalized supervision, assessment and evaluation mechanism, and timely informed the annual promotion of precast buildings in cities and counties of the province.
Source: chinanews.com reporter Wang Ziqian.
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