by I.
overview of the development of prefabricated building industry: the voice of building industrialization and prefabricated building is getting louder and louder, and the enthusiasm of promoting prefabricated building technology throughout the country is still increasing.
From the information of industrialization demonstration bases and projects fed back by various places, some industrialization achievements have been made, which are worth summarizing, promoting and applying.
However, there are many problems exposed in the process of industrialization implementation, and the implementation effect is far from reaching the expected goal.
The current construction industry management system and construction enterprise ecology need to be reformed to speed up the implementation of the high-quality development strategy of specialization and professionalism in the whole assembly industry chain.
Otherwise, the healthy development and large-scale promotion and application of assembly buildings in China will be seriously affected.
In China, the integration and upgrading of the industrial chain related to prefabricated buildings and the construction of software and hardware have not been completed.
The professional and professional level of the employees in the engineering construction, design, construction and production units is low, and they lack of industrial technology management ability and engineering experience.
They still manage industrial projects according to the lowest price bidding concept of the traditional cast-in-place structure, often resulting in unreasonable industrial planning and design scheme, The selected contractors and component processing plants do not have professional technology and industrialization implementation ability, which seriously affects the implementation effect of the industrialization project, resulting in high cost, poor quality and low efficiency in the project implementation process.
China’s current construction management system is still not suitable for the requirements of industrialization development.
The division of construction entities has caused the intersection of responsibilities and rights, and it is very difficult to coordinate the project as a whole.
The personnel and resources invested by the construction or supervision unit are seriously insufficient, and the ability to coordinate and manage the industrialization project is very poor.
The professional technology and management level of the construction unit cannot meet the requirements of the industrialization of new buildings, This leads to the problems of poor quality, long construction period and high cost in the process of project promotion, and even the conclusion that the industrialization is not as good as the traditional construction.
It is necessary to explore and reform the current construction management mode as soon as possible, and promote the management mode of combining general contracting with specialized division of labor; Enterprises are encouraged to develop new products through technological innovation and improve quality and efficiency through scientific management.
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 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, 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.
Based on the problems existing in the implementation of prefabricated buildings in various parts of the country, there is a strong contrast with the efforts of local governments to promote prefabricated assembly technology.
All localities need to systematically summarize and reflect on the objectives, paths, speed and other indicators of industrialization, adhere to the scientific attitude of seeking truth from facts, slow down the pace, accumulate experience, and explore a harmonious but different localization development path.
We should start with pilot projects and demonstrations in some large and medium-sized cities where conditions permit, constantly sum up experience, train talents, and gradually popularize them to small and medium-sized cities.
All enterprises should rely on the market competition rules, build an industrial technology system and development platform based on regional characteristics, carry out technological management innovation, improve the technical level of building industrialization, and expand the application field of precast concrete.
Make great efforts to cultivate a number of localization and industrialization companies and workers to ensure the completion quality and implementation efficiency of industrialization projects at the initial stage.
2、 Development of precast concrete enterprises: the uneven development layout of precast plants in the country is quite prominent.
Precast plants are mainly concentrated in large and medium-sized cities in the East.
Recently, large cities in the central and western regions have also begun to build PC plants.
Generally speaking, the construction speed is too fast, resulting in serious shortage of factory tasks in many places, while the factory tasks in some areas are saturated in the short term, The main reason is that the production time is mostly concentrated in the half year period from April to October.
The poor planning of the project construction also seriously affects the operation efficiency and operating results of the prefabrication plant.
（1） Development of PC enterprises in 2019, the number of precast concrete production enterprises in China increased rapidly.
According to incomplete statistics, nearly 200 new precast plants were added in this year.
Up to now, there are more than 1000 precast plants with a scale of more than 30000 cubic meters in China.
More than 600 new prefabrication plants have been built in the past three years.
At present, the production of prefabricated components is mainly based on the production capacity of the old prefabricated factory or the upgraded factory.
Except for some large enterprises with good operation and management, the general factories lack the overall advantages of the industrial chain, and their operation conditions and economic benefits are poor.
Most of the new factories are in the trial operation stage, and there are great shortcomings in personnel, management and other software construction.
If there is no overall advantage of the industrial chain, there is a great business risk.
For example, in view of the investor’s positioning of the whole industrial chain base, some factories can overcome short-term difficulties and have large long-term development space..
