Recently, the Ministry of Housing and Urban-Rural Development successively approved six provinces including Zhejiang, Shandong, Sichuan, Hunan, Jiangxi, and Henan to carry out pilot projects for the construction of steel-structured houses. The pilot programs have their own characteristics.

　　Pilot target: By 2020, the province will build more than 5 million square meters of steel-structured prefabricated houses.The proportion of newly-built and assembled residential areas will strive to reach more than 12% and build more than 10 steel-structured residential demonstration projects, including pilot projects. The area has built more than 3 million square meters of steel structure assembly houses. By 2022, the province has built more than 8 million square meters of steel structure assembly houses, including 500,000 square meters of rural steel structure assembly houses.

　　Pilot scope: The province has identified Hangzhou, Ningbo and Shaoxing as pilot areas, Lin'an District of Hangzhou City and Keqiao District of Shaoxing City as pilot areas for rural steel structure assembly houses exploring the construction of 1-2 demonstration villages of light steel structure.

　　Pilot target: By 2020, Shandong will initially establish a technical standard system and quality and safety supervision system for steel structure assembly houses in Shandong Province,forming a complete steel structure assembly type housing industry chain. By 2021, the province's new steel structure assembly houses will be more than 3 million square meters, of which more than 2 million square meters of new steel structure assembly houses will be promoted in the region.The steel structure construction industrial clusters in southwestern Shandong, Luzhong and Jiaodong will be basically formed.

　　Pilot scope: Pilot construction of steel structure assembly houses in the province and the pilot period is 3 years. Considering factors such as economic development, industrial foundation, seismic fortification, etc., nine districts and cities such as Jinan, Zaozhuang, Yantai, Weifang, Jining, Rizhao, Linyi, Liaocheng and Heze, and Zibo District of Zibo are listed as steel structure assembly houses. Promote the area.

　　Pilot goal: Hunan will strive to establish a mature technical standard system for the actual steel structure assembly houses in Hunan Province through the pilot in three years (2019-2021) and cultivate more than five large-scale steel structure assembly-type residential project general contracting enterprises.It will complete more than 10 pilot projects for steel structure prefabricated houses and through project practice, focused on solving the "three-plate" supporting, steel product assembly, system integration, high cost and poor quality and quality problems that are plaguing steel-structured houses. Promote the application and set benchmarks to accumulate experience. Formed a cluster of green steel structure assembly-type construction industry in Hunan Province.

　　Pilot scope: The province has determined that Changsha City, Zhuzhou City, Loudi City, Shaoyang City, Jishou City, Xiangyang County of Yueyang City, and Xidongting Management District of Changde City are pilot cities (counties) for national steel structure assembly houses. The administrative departments in charge of the construction of each pilot city (county and district) shall submit the implementation plan for the pilot work in the region and the pilot project for 2019 to the Provincial Joint Conference on Assembly and Building Development before the end of July.

　　Pilot objectives: Piloting steel-structured residential buildings in six cities (states) of Chengdu, Mianyang, Guang'an, Yibin, Ganzi and Liangshan to promote the development of steel-structured residential buildings. By 2022, the province will cultivate 6-8 steel structure backbone enterprises with an annual production capacity of 800,000-100,000 tons, and cultivate 2-3 key steel industry key laboratories or engineering technology research centers. Cultivate new wall materials and fabricated decoration materials enterprises for the construction of more than 10 steel structure assembly houses. The newly-built steel structure assembly house is more than 5 million square meters.

　　——Let's play the role of the application industry base. The application-oriented industrial base will start no less than one new demonstration project each year. Based on the demonstration projects, the R&D capital investment will be increased, and the annual R&D capital investment will reach 1% of operating income. On the basis of integrating research and development, parts manufacturing, and related product production, it will form 1-2 steel structure assembled residential technology systems and no less than 5 construction methods.

　　——Play the leading role of R&D industry base technology. We will carry out technical research on key technology research and development, standard formulation and product standardization of steel structure prefabricated houses, and form a technical system suitable for the development of steel structure assembly houses. Encourage enterprises, universities, and research and development institutions to jointly set up R&D centers and support R&D centers to declare national and provincial engineering and technology centers. The research and development industry base carries out no less than three research projects related to steel structure assembly houses.

　　—— Guide the manufacturing industry base to develop a product system suitable for steel structure assembly type residential applications, focusing on the development of product systems such as main structure, exterior wall, interior wall and assembly decoration, and form a systematic and complementary standard product system. The annual R&D capital investment of the manufacturing industry base reaches 1% of the operating income, and there are no less than 3 new products for the newly-built steel structure assembled houses.

　　Pilot target: By the end of 2020, the province will cultivate more than 10 steel structure backbone enterprises with an annual output value of over 1 billion yuan, start construction of more than 20 steel structure assembly houses demonstration projects, and build no less than 5 light steel structure farmhouse demonstration villages. The pilot work achieved phased results. By 2021, through the pilot to solve the problem of the construction of troubled steel structure assembly houses, gradually form a mature system of steel structure assembly house construction, and promote the development of steel structure production, design, construction and installation of the entire industry chain. By 2022, the newly-built steel-structured prefabricated houses in the province accounted for more than 10% of new residential buildings.

　　Pilot scope: Nanchang City, Jiujiang City, Zhangzhou City, Fuzhou City, Yichun City, and Xinyu City were the first pilot cities.

　　Pilot target: By 2022, cultivate more than 5 provincial-level steel structure assembly-type industrial bases and 2-3 steel structure general contracting qualification enterprises, and build 10 urban steel structure assembled residential demonstration projects, and actively carry out pilot-type agricultural housing pilot projects. Explore the construction of 1-2 demonstration villages for light steel structures.

　　Pilot work plan for promoting steel structure assembled houses in Zhejiang Province

　　In order to implement the spirit of the "Guiding Opinions of the General Office of the State Council on the Development of Prefabricated Buildings" (Guo Ban Fa [2016] No. 71) and other documents, vigorously promote the development of green buildings and promote the transformation of Zhejiang Province from a large steel structure to a strong province. The following plans were formulated for the pilot work of steel structure assembly houses.

　　(1) Guiding ideology. Guided by the socialist ideology with Chinese characteristics in the new era, comprehensively implement the spirit of the 19th and 19th Central Committees of the 19th Party Congress, and closely promote the overall layout of the "Five in One" and coordinate and promote the "four comprehensive" strategy. Layout, firmly establish and implement the new development concept, in accordance with the requirements of high-quality development, take the supply-side structural reform as the main line, implement the decision-making and deployment of the national housing and urban-rural construction work conference, steadily promote the development of steel-structured residential buildings, and promote the construction of Zhejiang Province. Industry transformation and upgrading.

　　(2) Basic principles. Adhere to the combination of government guidance and market promotion. Adapt to market demand, give play to the decisive role of market allocation resources, better play the role of government planning guidance and policy support, form a favorable market environment, and stimulate the development, design, production, construction, materials, scientific research and other enterprises in the construction of steel structure assembly houses The endogenous power in the market has formed a situation in which market participants participate extensively, cooperate in coordination, and develop in an orderly manner.

　　Adhere to the combination of problem orientation and innovation drive. In view of the problems existing in the current construction of steel structure prefabricated houses, the promotion mechanism and model innovation, increase technical research, support new technologies, new processes, new functional applications, and comprehensively solve the practical problems and common problems in the promotion of pilot work. A steel structure assembled house construction system with Zhejiang characteristics.

　　Adhere to the combination of local conditions and overall planning. According to the economic development status, industrial base and multi-level diversified construction needs, we will take the lead in promoting the pilot work of steel structure prefabricated houses in key areas, and promote the application of light steel structures in tourism and rural self-built houses in accordance with local conditions. Promote the overall, overall drive the local work pattern.

　　Adhere to the combination of system construction and linkage promotion. The paper draws on the advanced experience at home and abroad to establish and improve the standard technical system, production system, market supervision system and monitoring and evaluation system for steel structure assembly houses. Optimize the integration technology of the whole industrial chain of steel structure-assembled houses, realize the joint development of steel structure-assembled houses and residential buildings, and promote the coordinated development of upper and middle reaches of construction steel and intelligent equipment.

　　(3) Work objectives. Give full play to the advantages of Zhejiang steel structure industry clustering, solve the practical problems of restricting the development of steel structure prefabricated houses through the pilot of steel structure assembled houses, establish and improve the standard system of steel structure assembly houses with Zhejiang characteristics, and improve the steel structure assembly. The implementation ratio of residential houses will strive to build Zhejiang into a leading steel structure assembly residential industrial base, enterprise cluster and R&D highland.

　　By 2020, the province has built more than 5 million square meters of steel-structured prefabricated houses, accounting for more than 12% of the proportion of newly-built and assembled residential areas, and built more than 10 steel-structured residential demonstration projects, of which pilot areas have been built. More than 3 million square meters of steel structure assembly houses.

　　By 2022, the province has built more than 8 million square meters of steel structure assembly houses, including 500,000 square meters of rural steel structure assembly houses.

　　In this pilot work, Hangzhou, Ningbo and Shaoxing were selected as pilot areas. Lin'an District of Hangzhou City and Keqiao District of Shaoxing City were used as pilot areas for rural steel structure assembly houses, and 1-2 light steel structure farm demonstration villages were explored.

　　The construction administrative department of each pilot area may recommend the first-class enterprise of steel structure professional contracting and the construction industry (construction engineering) Grade A enterprise with good credit, relevant technical capabilities and plant equipment as the pilot enterprise to be reported to the Zhejiang Provincial Department of Housing and Urban-Rural Development. .

　　Other regions may recommend the first-class steel structure contracting enterprise and the construction industry (construction engineering) Grade A enterprise to participate in the construction of steel structure assembled residential projects as pilot enterprises reported to the Zhejiang Provincial Department of Housing and Urban-Rural Development.

　　Three to four pilot projects can be recommended in the pilot area, and 1-2 projects in other regions can be recommended to the Zhejiang Provincial Department of Housing and Urban-Rural Development.

　　Third, the pilot content

　　(1) Promote pilot demonstrations. In the pilot areas, affordable housing, relocation and resettlement housing, commercial housing, rural housing construction, dilapidated housing renovation, and future community residential projects in Zhejiang Province, a certain proportion of projects use steel structure assembly construction methods, the specific proportion from the pilot area in the pilot Clear in the plan. In combination with the rural revitalization strategy and the construction of beautiful villages, the use of steel structures to encourage the renovation of rural dilapidated buildings, resettlement of rural areas, and the construction of housing in rural areas will be used to guide the construction of steel structures such as light steel frame structures and low-rise cold-formed thin-walled steel structures. In accordance with the principle of advanced technology, economic application and strong demonstration, local governments will implement pilot demonstration projects in phases.

　　(2) Improve the standard system. Continuously improve the general standards and technical systems of steel structure assembly houses, concentrate on the core technologies of fireproof and anticorrosion, sound insulation and waterproof, node connection, etc., and form a steel structure assembly type residential technology system with Zhejiang characteristics. Promote the standardization of steel structural parts and components, and help steel structure enterprises to produce parts of suitable steel structure assembly houses. Support enterprises to prepare steel structure assembly type residential enterprise standards, and encourage social organizations to prepare group standards.

　　(3) Promoting technological innovation. Continuously improve the design and management level of steel structure assembly houses. Promote standardized design and improve the integrated design capability of the design unit steel structure assembly house. Promote technological upgrading of steel structure production lines and innovation of manufacturing models, and focus on the application of technologies such as building information model (BIM) and automatic machining and welding assembly in steel structure assembly houses to improve the high-end manufacturing level of the industry. Strengthen the steel structure assembly type housing parts using chip identification and two-dimensional code recognition technology to realize information management and traceability of the whole life cycle.

　　(4) Building industrial clusters. Accelerate the upstream and downstream linkage of steel structure assembly houses, guide steel production enterprises to optimize and adjust the industrial structure, and develop high-performance fireproof, anti-corrosion products and standardized construction steel. Promote technological upgrading of steel structure production lines, innovation of manufacturing models, accelerate the upgrading of intelligent manufacturing of steel structure enterprises, and vigorously carry out “machine substitution”. Strengthen production capacity building, optimize the layout of productivity, and actively promote the construction of steel structure industrialization base. Guide the supporting parts production enterprises to develop technologies and products suitable for standardization, serialization and generalization of steel structure assembly houses. In principle, steel-structured houses must be delivered in an assembly-style decoration to promote the integration of structural insulation and decoration, full decoration and integrated kitchen and bathroom integration.

　　(5) Innovation organization model. Vigorously promote the steel structure assembly type residential project to adopt the whole process engineering consulting and general contracting construction, accelerate the transformation of the engineering construction organization mode, and improve the supporting system of contracting, construction permit, project cost and completion acceptance of the general contracting of the project, and realize the project. Unified management and deep integration of design, component production, construction and procurement, and optimization of project management methods. To cultivate the whole process engineering consultation of the prefabricated building, the government investment project should take the lead in implementing the whole process engineering consultation, and encourage the non-government investment project to entrust the whole process engineering consulting service.

　　(6) Accelerate the cultivation of talents. Intensify the cultivation and construction of the talent team in the entire industrial chain of steel structure assembly houses, promote the formation of a multi-level steel structure assembly-type residential technical skills training model guided by the government and participate in various aspects, and accelerate the cultivation of a number of multi-level professionals who meet the development needs. Focus on cultivating steel structure assembled residential design talents. Actively carry out the knowledge upgrading of steel structure assembly type residential talents, continuing education of professional and technical personnel, skill competition of front-line workers, etc., and continuously improve the skills and technical level of industrial workers in the installation and processing of steel structure assembly type residential projects.

　　The pilot project of steel structure assembled houses was implemented in three phases.

　　(1) Deployment start-up phase (June 2019-September 2019). The Zhejiang Provincial Department of Housing and Urban-Rural Development has identified pilot enterprises and pilot projects reported in various pilot areas, and convened pilot areas and pilot enterprises to mobilize and deploy pilot projects for steel-structured residential buildings. The administrative departments of construction of the pilot areas shall formulate specific implementation rules in accordance with this plan and fully deploy the pilot work.

　　(2) Organizational implementation stage (October 2019 - October 2022). In accordance with the pilot program and implementation rules, the pilot areas and pilot enterprises were carefully organized and implemented conscientiously, and the pilot work was actively carried out to complete the pilot tasks. At the same time, the pilot implementation phase should strengthen supervision, strengthen process evaluation, and organize observation and exchange promotion in a timely manner.