In terms of precast buildings, it has entered the “second half” of the ten-year top-level plan for the vigorous development of precast buildings at the national level.

as the integration point of the whole construction process and all-round information, BIM Technology includes design, production, design, decoration and management, It runs through the whole process of the precast building.

The main reason for the high price of precast components is the large one-time investment in the construction of component production base and the high amortization cost of components..

2021 is the first year of the 14th five year plan.

After the exploration and practice during the 13th Five Year Plan period, precast buildings have entered the stage of accelerating development and expanding surface and improving quality.

In March 2021, the two sessions of the National People’s Congress for the first time included “carbon peak and carbon neutralization” in the government work report, officially opening the prelude to the specific implementation year of the “double carbon goal” – China’s carbon dioxide emissions strive to reach the peak by 2030 and strive to achieve carbon neutralization by 2060.

In terms of precast decoration, because its technology is similar to that of traditional full decoration, and the main barrier is still management, in addition to the precast decoration enterprises that have been deeply cultivated for many years, the main players in the industry will still be dominated by traditional decoration enterprises, such as yaxia, Golden Mantis, Quanzhu, etc.

As one of the three major energy consuming industries, the construction industry’s energy conservation and emission reduction is a very important link to help achieve carbon neutrality.

Starting from the precast building itself, compared with the traditional construction buildings, the precast building has the advantages of high degree of standardization, saving construction period, four sections and one environmental protection and good quality.

In order to vigorously promote the development of precast buildings, all provinces, cities and autonomous regions have launched corresponding target response and incentive policies to reward the projects in the form of precast buildings in the form of plot ratio, advance pre-sale, land price subsidy and other forms, so as to promote the good development of the precast construction market in all aspects.

The whole life cycle is roughly divided as follows: according to the industrial chain, the assembly type can be simply divided into three links: upstream design and development, midstream component production, downstream construction and operation and maintenance.

Among them, the upstream includes technology research and development, technical consultation, planning and overall design; The midstream includes industrialized production of component parts, component hoisting and on-site construction, indoor and outdoor decoration; Downstream includes marketing, property management, demolition and scrapping, and resource treatment of construction waste.

It is necessary to promote the green and low-carbon development of the whole industry chain of the construction industry from the whole life cycle of building material production, construction, operation and maintenance.

However, under the precast mode, the professional boundaries of all links are clearer, the status of design and processing links is improved, the profit is higher, and more excellent private enterprises are expected to emerge.

The development of precast buildings in China: Taking China’s 13 five-year plans as stages, China’s construction industrialization is generally divided into four development stages: the initial stage of construction industrialization, 1953-1975; The ups and downs stage of construction industrialization, 1976-1995; Upgrading stage of construction industrialization, 1996-2015; The great development stage of construction industrialization, from 2016 to now.

The specific comparison is as follows: but its pain points are also obvious: first, the policy support is not enough, Although the government has vigorously promoted precast buildings and set up some pilot cities and industrial bases in recent years, some policies are not conducive to the promotion of precast structure system.

Driven by the new generation of information technology, the new-type construction industrialization integrates the whole industry chain, value chain and innovation chain of the project by means of systematic integrated design and lean production and construction in the whole life cycle of the project, so as to realize the construction industrialization with high efficiency, high quality, low consumption and low emission.

In terms of precast buildings, considering that the EPC mode is vigorously promoted by policies and the strong order receiving ability of construction central enterprises and state-owned enterprises, general contracting is still the trend.

all upstream and downstream enterprises form a complete industrial chain, but now the industrial chain of construction products is not mature enough.

Third, the upstream and downstream industrial chain is not perfect.

For example, PC components are regarded as commodities, and the tax rate is much higher than that of other building materials.

Second, there is a lack of precast technical standard system, a complete precast assembly technical standard system has not been formed, there is a lack of standards in the design, production, construction and acceptance of buildings, there is no quota applicable to precast construction for reference in the market, and there is also a lack of construction units that can skillfully grasp the precast construction technology.

Bend Loop

However, benefiting from more large-scale and standardized production processes, the industry concentration is expected to increase, and the leading market space may be further opened.

The enterprises involved include owners, design units, component production plants, construction units, etc.

Analysis of precast industrial chain according to the outline for the modernization of building industrialization, the design system of civil buildings can be divided into three parts: precast buildings adhere to the concept of sustainable development and circular economy, from technology research and development, technical consultation, planning and design, industrialized production, component transportation, component hoisting and on-site construction, indoor and outdoor decoration, market sales, property management From demolition and scrapping to the final recycling treatment of construction waste, the policy of “four sections and one environmental protection” is adhered to at all stages to build a “green” precast construction industry chain.

In terms of technology, the application of BIM Technology is also indispensable in the assembled industrial chain.

It is applied to planning and decision-making, scheme design, construction process simulation, building material management, building collision detection, etc.

Analysis of the current situation of the industry: the state has vigorously promoted the industrialization process, and all provinces and cities have also responded positively.

The integrated development between the upstream, middle and downstream of the industrial chain, the circular exchange of material and energy information, and the common pursuit of the maximization of economic benefits, environmental benefits and social benefits.

The production process of precast construction includes the early R & D and design of construction products, construction and later operation and maintenance.

Fourth, the cost of precast construction engineering is high.