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China Construction News reported that 丨Promote the development of prefabricated buildings and accelerate the application of innovative technologies

  • 2022.03.14

  • Trinity Construction



Prefabricated buildings are an important starting point for achieving the "double carbon" goal, and are far superior to traditional buildings in terms of green and low-carbon, energy conservation and emission reduction. In recent years, the state has promoted the development of prefabricated buildings, and the intensity has been increasing. During the "14th Five-Year Plan" period, whether prefabricated buildings can further develop sustainably and healthily is related to the overall high-quality development of the construction industry, and also determines the green development of the construction industry.

Xu Wenhao, general manager of the marketing company of Sany Construction Technology Co., Ltd. (hereinafter referred to as "Sany Construction Engineering"), and Ma Yunfei, president of Sany Construction Engineering Architectural Design and Research Institute, combined with the actual development of the enterprise, proposed to promote the healthy and rapid development of prefabricated buildings must return to the essence of industrialization, promote the green construction of the whole process of engineering construction, and accelerate the application of innovative technologies.

The development of prefabricated buildings focuses on "whole-process industrialization"

The prefabricated building has the characteristics of "standardized design, factory production, and assembly construction", and has the attribute of "green and low-carbon". However, from the current point of view, the concept of industrialization, industrialization and systematization of the construction industry has not been fully established, and each link is fragmented to a certain extent.

From the perspective of the practice of Sany Construction, in order to make the prefabricated building truly play the effect of energy conservation and emission reduction, we must focus on the "whole process industrialization". On the one hand, it is necessary to change the thinking that "the construction stage does not contribute much to energy conservation and carbon reduction". Building energy consumption is mainly in the material production and operation and maintenance stage, and the carbon emission in the construction stage accounts for only 1%, but this does not mean that the construction stage is not important, because the construction quality determines the energy saving and emission reduction effect in the later operation and maintenance stage, and the low-carbon and green follow-up operation and maintenance must be ensured through the continuous optimization of the construction process. At the same time, rather than focusing on a particular phase, it is more important to think about how to minimize energy consumption throughout the life cycle of a building. On the other hand, it is necessary to combine the two major professions of architecture and structure in depth, formulate reasonable energy-saving and emission reduction targets from the scheme design stage, clarify the selection of environmentally friendly materials, the layout of house types, and the application of new technologies, so as to maximize the advantages of prefabricated buildings with green energy-saving as the guide.

Ma Yunfei added that in addition to technical investment, the construction of digital platforms is also crucial. Digital applications should run through the whole process of prefabricated buildings, and digital models should not only empower the whole process of production and guide construction, but also provide energy conservation and carbon reduction services in the operation and maintenance stage. Promoting the "integration of industrialization, digitalization and greening" and promoting the rapid development of prefabricated buildings is an important direction for the transformation and upgrading of the industry in the future.



Abandon the "assemble for assembly's sake" development idea

At present, in order to speed up the development of prefabricated buildings, many regions regard the assembly rate as the main indicator for formulating support policies, and give certain preferential support to "standard" enterprises and projects. The assembly rate is one of the important indicators to evaluate the degree of assembly of prefabricated buildings, which is of great significance for the promotion of prefabricated buildings. However, in the development of prefabricated buildings, there is a deviation in the understanding of the assembly rate in some areas, and the phenomenon of "water discharge" occurs in actual operation, resulting in the emergence of "pseudo-prefabricated buildings".

In order to promote the sustainable and healthy development of prefabricated buildings, we must return to the original intention of the development of building industrialization: the use of the industrialization evaluation standard system will greatly reduce on-site construction, reduce the amount of labor, and reduce the consumption of energy resources.

Xu Wenhao emphasized that government departments are important promoters of the development of prefabricated buildings, and should mobilize the enthusiasm of all parties while continuously improving the assembly rate. Through the application of new technologies, the quality of housing can be improved, and the popularization of higher levels of energy-saving standards can be promoted, which will truly benefit the development of all parties.

In addition, Ma Yunfei proposed that the state and industry authorities should encourage increased investment in scientific and technological research and development and new product development, take the lead in establishing an authoritative evaluation agency and cultivating a talent team, and promote the healthy and rapid development of prefabricated buildings; The development of advanced prefabricated structure technology system should be encouraged and guided, and policy support should be given for the problems existing in the promotion of new technologies, so that prefabricated buildings can truly lead the green and low-carbon development of the construction industry.

Promote the development of new technologies for prefabricated buildings

Founded in 2016, Sany Construction Engineering is positioned to empower the building ecology with SPCS ("SPCSinside"), a "prefabricated building system solution" - SPCS (Sany Construction Engineering Self-developed Prefabricated System). Sany Construction Engineering has always been committed to starting from the perspective of the whole process, emphasizing the return to the original intention of the development of construction industrialization, emphasizing the application of technological innovation, "treating construction as a product and construction as manufacturing", focusing on the main structure of concrete buildings, using SPCS to provide system solutions for the industrialization of the main structure, moving towards intelligent construction through building industrialization, and realizing the low-carbon development of the construction industry, which has been widely recognized by the industry and abroad.

Sany Construction Engineering independently developed the structural technology system of "cavity lap plus post-casting, shaping mold pouring node", and pursued "full prefabrication of walls, columns, beams and slabs + full assembly above ground and underground", which solved the pain points of prefabricated building structure safety, water leakage, external wall insulation, shortage of industrial workers, and high cost, which is in line with building energy conservation and high-quality development. SPCS's "vertical high prefabricated assembly + horizontal industrialized post-pouring" scheme greatly reduces the on-site operation of steel bars, formwork and scaffolding, with high policy scores and a cost close to aluminum mold cast-in-place, as a transition scheme of "full prefabrication and full assembly", it has an absolute competitive advantage. SPCS3.0 has 5 types of intelligent equipment, building structure and construction of Sany ConstructionCategory 2 standardsThe core competitiveness of the industry, including intelligent design software, intelligent analysis of 3D model driven equipment automation software, BIM (building information model) based on SaaS (software service provided through the network) software for one-code component management, and real-time online project collaboration management platform for full cycle, all elements and all roles, is leading in the industry. The application of SPCS technology and BIM can drive the industrialization of the industrial chain of building mechanical and electrical installation, decoration and decoration, and smart home, reconstruct the new ecology of the construction industry, and achieve low-carbon and high-quality development.

Xu Wenhao said that in the future, Sany Construction will continue to comprehensively promote the industrialization of new buildings represented by prefabricated buildings, and help the construction industry achieve the "double carbon" goal as soon as possible through the SPCS structural system.

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