by 1、 Overview of the development of prefabricated construction industry this year, due to the impact of COVID-19, the progress of capital construction activities in the first half of the year was seriously hindered.
In the second half of the year, due to the better control of the epidemic, with the introduction of the national and local governments to resume production and the implementation of new infrastructure policies, the construction industry ushered in a new round of development opportunities for strong growth.
After nearly ten years of development, China’s building industrialization and the development of prefabricated buildings have now entered the platform stage and the breakthrough stage.
Although the enthusiasm for promoting prefabricated building technology throughout the country continues to increase, from the analysis of the construction of industrialization demonstration bases and the implementation of prefabricated projects, there are growing pains in the process of rapid development.
The scale and quantity of the implementation of prefabricated buildings have reached a considerable scale, Some scientific and technological achievements of industrialization promotion have also been achieved, but the overall effect of improving the quality and efficiency of prefabricated buildings is not obvious.
During the implementation process, problems such as shortage of industrial workers, low project quality, low construction efficiency and poor project management professionalism have also been exposed.
It is urgent for all localities to systematically summarize and reflect.
The existing traditional construction industry management system needs to be constantly innovated and improved.
In combination with the high-quality development needs of the construction industry in the new era, we should accelerate the implementation of the professional and professional platform construction of the assembled whole industry chain.
At present, the integration and upgrading of the industrial chain related to prefabricated buildings and the construction of software and hardware have not been completed in China.
The professional and professional level of the employees in the engineering construction, design, construction and production units is low, and they are very lack of industrial technology management ability and engineering experience.
Most enterprises still implement prefabricated projects according to the lowest price bidding concept of traditional cast-in-place structure, and there are generally unreasonable planning and design schemes, The unscientific construction period plan and the lack of professional technology and industrialization implementation ability of the technical management personnel of the contractor and the component processing plant have seriously affected the implementation effect of the industrialization project, resulting in the prominent problems of high cost, poor quality and low efficiency in the project implementation process.
The core connotation of the modernization of the construction industry is to build high-quality buildings by means of industrial lean construction to achieve the green development goal of energy conservation and emission reduction.
The development experience at home and abroad has proved that the prefabricated building is a systematic project.
It is necessary to promote the project practice of talent team construction and project management step by step, consolidate the foundation of product production and construction quality, and finally realize the high-quality and efficient development goal of the prefabricated building.
The whole industry should realize that without talents and quality as the basis, it is not advisable and feasible to stay in the rush period and copy low-quality buildings on a large scale.
In the face of the urgent need of transformation and upgrading of the construction industry in all parts of the country, governments at all levels and relevant enterprises in the precast concrete component industry should keep a clear understanding, determine the industrialization technology system and development path according to local conditions, actively carry out the construction of pilot projects and demonstration projects, constantly summarize experience, learn lessons, and promote the modernization of China’s construction industry in a down-to-earth manner.
Those practices of promoting prefabricated buildings that ignore the constraints of objective conditions and are greedy for perfection and eager for success must be corrected.
2、 Development of precast concrete component enterprises: the investment and construction speed of precast plants in the country is too fast, and the guidance of overall industrial planning and layout is lacking.
Many precast plants blindly invest in construction, resulting in a large amount of land and resources waste; Due to the limited growth of market share, the phenomenon that a considerable number of factories can not receive orders or can not operate after receiving orders is quite prominent, which intensively exposes that the investment and development of prefabrication factories in China are in a disordered state.
（1） Development of PC enterprises in 2020, the number of prefabricated concrete component manufacturers in China still grew rapidly.
According to incomplete statistics, nearly 200 new prefabricated plants were added in this year.
Up to now, there are more than 1200 prefabricated plants with a scale of more than 30000 cubic meters in China.
Due to the lack of operating experience of PC plant, the newly-built PC plant generally focuses on investment and construction and neglects operation management, which results in unreasonable plant planning and design scheme, inapplicable process equipment configuration and low plant operation efficiency.
For new factories with large investment, there are great shortcomings in software construction such as personnel and management.
If there is no overall advantage of the industrial chain, there will be a great deal of business risks.
It can be predicted that a considerable number of PC factories will close down or change production in the next 3-5 years.
The lessons in this respect should be highly concerned by the vast number of practitioners or future investors.
At present, the main force in the production of prefabricated components is mainly the use of old prefabrication plants or upgraded plants.
In addition to some large enterprises with good operation and management, the operation status and economic benefits of most of the plants are not optimistic.
Facing the impact of low-cost market competition, it is difficult to recover the loans, serious personnel loss, and difficult to operate and manage.
Except for a few PC enterprises with differentiated development, The vast majority of enterprises are in a loss state, resulting in a sharp decline in the operating quality and economic efficiency of the entire PC industry.
（2） Development of prefabricated component products and technologies at present, China’s prefabricated component products are mainly concentrated in prefabricated wall panels, prefabricated floors, prefabricated beams, prefabricated columns, prefabricated stairs, prefabricated balconies, etc.
for residential buildings.
The application objects of this part of components are mainly assembled integral structural projects.
In addition to Beijing and Shanghai, most areas still mainly stay in prefabricated laminated plates, stairs, balconies and other horizontal components, The degree of product standardization is generally very low, and the product technology is single and the variety is small, which seriously restricts its promotion and application.
The prefabricated component product system of municipal infrastructure includes prefabricated pipe gallery, prefabricated bridge, prefabricated pipe segment, prefabricated drainage pipe, etc.
with large market scale, high degree of standardization and good product quality, it has gradually become the main product of PC industry.
The development of municipal components has been healthy and orderly, and it is a benchmark for future construction component development..
