by In the next step, we will launch a new evaluation standard for precast buildings in Hainan Province as soon as possible, adjust measures to local conditions and scientifically guide to improve the assembly rate of precast buildings in Hainan Province.
▲ shanty town reconstruction in watermelon and mango areas, Tianya District, Sanya City (phase II) capping of the first building of the project ➤ on November 16, building 6 of the second phase of shantytown reconstruction project in watermelon and mango areas of Tianya District, Sanya City was capped, which is the first fully assembled and fully cast-in-situ building building in Hainan Province.
IRF component is an integrated component made of formwork (without disassembly) and reinforcement framework, which is divided into linear component, L-type component, T-type component, beam component and so on.
Based on the component requirements of this system, we have independently developed high-performance materials and the first set of special-shaped component series formwork in China.
➤ on the afternoon of September 4, watermelon, at the intersection of Fenghuang road and Huixin Road, Tianya District, Sanya City At the construction site of shanty town reconstruction (phase II) project in mango area, the staff are under intense construction, and the main structure of the 11# building on the resettlement housing plot has been officially capped.
After completion, it will solve the problems of people’s living in peace, students’ enrollment and employment People’s temporary medical treatment has greatly improved the quality of life of residents and the appearance of cities along Sanya Bay.
Precast IRF system of concrete shear wall structure “precast IRF system of concrete shear wall structure” is composed of shear wall based on IRF components, laminated floor slab, precast stairs, precast air conditioning board, etc., and adopts precast decoration.
The superior seismic performance of IRF system is consistent with that of cast-in-situ structure, and there is no wall on site The binding of formwork and reinforcement (including edge components) has the advantages of fast construction speed, light component weight and convenient transportation and hoisting.
Precast IRF system the precast IRF system is a science and technology project of the Ministry of housing and urban rural development and a major special project of China Railway Construction Science and technology.
As a demonstration project for China railway construction to implement the cast IRF system, it is also the first fully assembled and cast-in-situ project of vertical components in Hainan.
In early 2021, China Railway Construction’s first Hainan precast construction Industrial Park successfully landed at the gold medal port of Lingao County, and the construction of the characteristic industrial park of precast IRF system was started in June 2021, The Hainan demonstration project of precast IRF system has officially started construction.
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(IRF: integration of reinforcement and formwork).
The technology comprehensively adopts the permanent formwork technology and reinforcement forming and installation technology to make the formwork and reinforcement into integrated components for overall hoisting on the construction site.
During the implementation of NC management platform, the whole process management is carried out through the self-developed whole industry chain intelligent construction platform To empower the assembled IRF system by means of intelligence, digitization and informatization, which greatly improves the efficiency and level of project management.
Supporting water supply and drainage, electrical, ventilation and air conditioning, fire fighting, roads, parking lots, greening, gas and other projects will be built.
At present, the test building and demonstration project of the system have been completed, and 18 patents and one software copyright demonstration project patent and software copyright have been obtained.
The building functions of each plot are primary school, kindergarten, health service center and directional resettlement house, with a total construction area of about 260000 m2.
The construction process of IRF system is as follows: deepening design, IRF component production, component transportation, on-site installation and quality acceptance.
As one of the key construction projects in Hainan Province and Sanya City, Sanya Tianya watermelon and mango shanty town reconstruction phase II project has accelerated the construction process with the joint efforts of more than 500 construction personnel since the on-site construction was started in December last year.
Liu Lianwei, member of the Party group and deputy director of the Department of housing and urban rural development of Hainan Province, said: as a new building industrialization technology, the precast IRF system of concrete shear wall structure conforms to the characteristics of climate and geographical environment of Hainan Province, and also has the conditions for popularization and Application.
The practice of Hainan Sanya demonstration project shows that compared with the cast-in-situ structure, the demand and labor intensity of on-site construction workers will be greatly reduced by using the precast IRF system, It is estimated that the amount of reinforcement will be saved by 3%, the amount of formwork will be reduced by 90% and the construction waste will be reduced by nearly 40%, which is of great significance to promote the realization of the “double carbon” goal..
According to the requirements of the provincial Party committee and the provincial government and the green development needs of ecological civilization of Hainan free trade port, our province’s determination and strength to promote precast buildings will remain unchanged, and the requirements and standards will continue to improve.
Construction of Industrial Park and demonstration project in July 2020, the system passed the demonstration application technology demonstration of scientific and technological innovation in Hainan Province organized by the Department of housing and urban rural development of Hainan Province.
At present, our office is soliciting opinions on the revision of the evaluation standards of precast buildings from three aspects: first, promoting the use of new vertical components in the main structure; Second, “no reinforcement” is used to stack horizontal components such as floor slab; Third, promote assembly interior decoration.
▲ on September 4, watermelon and Shanty town reconstruction (phase II) project in mango area (phase II) is an important part of the project, which consists of four plots.
It is understood that the shantytown reconstruction project in watermelon and mango areas of Tianya district is the largest shantytown reconstruction project in Tianya District, Sanya City, which is divided into two phases.
It is developed by the Engineering Research Institute of China Railway Construction Group to promote the technological innovation of new building industrialization.
