by 1、 Overview of the development of prefabricated construction industry This year, due to the impact of the 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 good control of the epidemic, the construction industry ushered in a new round of strong growth opportunities with the implementation of the national and local governments’ policies on resumption of work and production and new infrastructure construction.
After nearly ten years of development, China’s building industrialization and prefabricated buildings have now entered a platform period and a critical period.
Although the popularity of promoting prefabricated building technology across the country is still increasing, the analysis of the construction of industrial demonstration bases and the implementation of prefabricated projects fed back from various regions has caused growing pains in the process of rapid development.
The scale and quantity of prefabricated buildings have reached a considerable scale, It has also made some achievements in industrialization and promotion of science and technology, 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 professionalism of project management have also been exposed.
It is urgent for all regions to systematically summarize and reflect.
The existing management system of the traditional construction industry 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 construction of a professional and professional platform for the whole assembly industry chain.
At present, the integration and upgrading of the industrial chain related to prefabricated buildings and the construction of software and hardware in China have not been completed, the professionalism and specialization of the employees in engineering construction, design, construction and production units are low, and the management ability and engineering experience of industrialization technology are very lacking.
Most enterprises still implement prefabricated projects according to the lowest price bidding concept of traditional cast-in-place structures, and the planning and design schemes are generally unreasonable, The construction period plan is not scientific, and the technical management personnel of contractors and component processing plants are lack of professional technology and industrialization implementation ability, which seriously affects the implementation effect of industrialization projects, resulting in high cost, poor quality, low efficiency and other problems in the project implementation process.
The core connotation of the modernization of the construction industry is to use industrial lean construction methods to build high-quality buildings and achieve the green development goal of energy conservation and emission reduction.
The experience of development at home and abroad has proved that prefabricated buildings are a systematic project.
Only by steadily promoting the project practice of talent team construction and project management step by step, and consolidating the foundation of product production and construction quality, can the high-quality and efficient development goal of prefabricated buildings be achieved.
The whole industry should realize that without talents and quality as the basis, it is not advisable or feasible to stay in the rush period and replicate low-quality buildings on a large scale.
In the face of the urgent need of transformation and upgrading to the modernization of the construction industry across the country, governments at all levels and relevant enterprises in the precast concrete component industry should maintain 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, draw lessons, and down-to-earth promote the modernization of China’s construction industry.
Those practices of promoting prefabricated buildings that disregard the objective conditions and seek perfection and success must be corrected.
2、 The development of precast concrete component enterprises The investment and construction of precast plants across the country is too fast, lacking the guidance of overall industrial planning and layout, and many precast plants invest blindly in construction, resulting in a large amount of land and resource waste; Due to the limited growth of market share, a considerable number of factories are unable to receive orders or operate even after receiving orders, which intensively exposes that the investment development of China’s prefabrication factories is in a disordered state.
（1） PC Enterprise Development In 2020, the number of precast concrete component manufacturers in China will still grow rapidly.
According to incomplete statistics, nearly 200 new precast plants were added in this year.
Up to now, there are more than 1200 precast plants with a scale of more than 30000 cubic meters in China.
Due to the lack of PC factory operation experience of the construction party, the new PC factory generally has the problem of focusing on investment and construction rather than operation management, resulting in unreasonable plant planning and design scheme, unsuitable process equipment configuration, low plant operation efficiency and other results.
For new factories with large investment, there are great weaknesses in software construction such as personnel and management.
If there is no overall advantage of the industrial chain, there will be a lot of operational risks.
It can be predicted that a considerable number of PC factories will close down or change production in the next three to five years.
The lessons learned in this regard should be highly concerned by the majority of practitioners or future investors.
At present, the main force in the production of prefabricated components is mainly the use of old prefabricated factories or upgraded factories.
In addition to the good operation and management of some large enterprises, the operation status and economic benefits of most factories are not optimistic.
In the face of the impact of low price market competition, it is difficult to recover the payment for goods, the loss of personnel is serious, and the operation and management are difficult.
Except for a few PC enterprises with differential development, the benefits are good, The vast majority of enterprises are in a state of loss, resulting in a significant decline in the operating quality and economic benefits of the entire PC industry.
（2） Development of prefabricated component products and technologies At present, prefabricated component products in China are mainly concentrated in prefabricated wall panels, prefabricated floor slabs, prefabricated beams, prefabricated columns, prefabricated stairs, prefabricated balconies, etc.
for residential buildings.
The application objects of this part of components are mainly integrated structural engineering.
Except for Beijing and Shanghai, most regions mainly stay in prefabricated laminated plates, stairs, balconies and other horizontal components, The standardization degree of products is generally very low.
In addition, the product technology is single and the types are few, which seriously restricts its promotion and application.
The product system of prefabricated components for municipal infrastructure includes prefabricated pipe racks, prefabricated bridges, prefabricated segments, prefabricated drainage pipes, etc.
The market scale is large, the degree of standardization is high, and the product quality is good.
It has gradually become the main product in the PC industry.
The development of municipal components has been relatively healthy and orderly, and it is a benchmark for future development of building components..
