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Application of BIM Information Integration Technology in the Field of Building Industrialization

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[Abstract]:
Prefabricated buildings are the “five-in-one” systemized and integrated buildings of design, production, construction, decoration and management, rather than “traditional production methods + assembly” buildings, using traditional design, construction and management models.

I. Introduction

Prefabricated buildings are the “five-in-one” systemized and integrated buildings of design, production, construction, decoration and management, rather than “traditional production methods + assembly” buildings, using traditional design, construction and management models. Assembly construction is not industrialization of buildings.

At the heart of a prefabricated building is “integration” and the BIM approach is the main line of “integration”. This main line connects the whole process of design, production, construction, decoration and management. It can digitally virtualize and describe various system elements in an informational way, realize informational collaborative design, visual assembly, interaction of engineering quantity information and simulation and inspection of node connection. New applications, integration of the entire industry chain, to achieve a full process, all-round information integration.

 

Second, BIM and standardized design

Establishment of standardized BIM component library

A typical feature of a prefabricated building is the use of standardized prefabricated or component parts. The prefabricated building design should adapt to its characteristics. Through the establishment of the BIM component library of the fabricated building, the number, type and specifications of the BIM virtual components are continuously increased, and a standardized prefabricated component library is gradually formed.

Interior wall panel BIM component library

Visual design

BIM applications facilitate a human-friendly collaboration and a more refined design through a visual design.

Visual design of exterior wall panels

BIM component splitting and optimization design

In the prefabricated building, the "split design" of the prefabricated components should be done. Avoiding the irrationality of the program leads to the irrationality of the later technical economy. BIM informationization can help to accomplish the above work. The geometric properties of a single exterior wall component can be visually analyzed to optimize the number of prefabricated exterior wall panels and reduce the type and number of prefabricated components.

Optimization of the number of siding panels

Component processing diagram

BIM collaborative design

The BIM model uses the three-dimensional information model as an integration platform, and is technically suitable for the collaborative work of various professions. Each major can work based on the same model.

The BIM model also contains building material information, process equipment information, cost information, etc., which can be used for data analysis, so that the collaboration of each major can reach a higher level.

Collaborative design - collision check

BIM performance analysis

Through the analysis and simulation of the project sunshine and projection, the designer can help the designer to adjust the design strategy, achieve the green goal and improve the building performance.

CFD flow field simulation

Ecotect sunshine simulation

 

Third, BIM and factory production

Component processing design

Through the BIM model, the information representation of building components, the component processing map is directly completed and generated on the BIM model, not only can clearly convey the two-dimensional relationship of traditional drawings, but also can clearly express the complex spatial profile relationship, and also can By concentrating discrete 2D drawing information into one model, such a model can more closely achieve synergy and docking with prefabricated plants.

Component processing diagram

Component production guidance

BIM modeling is a true reflection of the building. In the production process, BIM information technology can automatically generate production forms such as component blanks, dispatch orders, mold specifications and parameters, and can help workers better through visual and visual expression. Understand the design intent, can form BIM production simulation animation, flow chart, explanatory diagram and other auxiliary training materials, help to improve the accuracy and quality efficiency of workers.

Component production simulation

Digital manufacturing of prefabricated components by CAM

With the factory-oriented, mechanized production method and centralized and large-scale production equipment, it is only necessary to input BIM information data into the equipment to realize automatic production of machinery. This digital construction method can greatly improve work efficiency and production quality.

For example, the commercial production of steel mesh has been realized, and the steel bars that meet the design requirements are automatically cut in the factory, automatically formed, and automatically welded (ligated) to form a standardized steel mesh. If you can get through the synergy bottleneck between the design information model and the factory automation production line, CAM (Computer Aided Manufacturing) will be just around the corner.

 

Fourth, BIM and assembly construction

Construction site organization and process simulation

The construction schedule is written into the BIM information model, and the spatial information and time information are integrated into a visual 4D model, which can intuitively and accurately reflect the construction process of the entire building. It is predicted in advance whether the main construction control method and construction arrangement of the project are balanced, whether the overall plan and site layout are reasonable, whether the process is correct, and timely optimization.

Construction process simulation

Construction installation training

Through virtual construction, installation and construction, managers can clearly understand the assembly structure of the prefabricated building, avoiding the misunderstanding caused by the 2D drawings and ensuring that the project is on schedule.

Construction simulation collision detection

Through collision detection analysis, it is possible to collect and correct the “missing and missing” in the traditional two-dimensional mode. For example, the collision detection of various components inside the prefabricated component, the potential staggered collision problem between the floor heating pipe and the electrical pipeline.

Impact checking

Construction simulation of complex nodes

Pre-retrospection of complex parts and key construction nodes through construction simulation, increasing workers' familiarity with construction environment and construction measures, and improving construction efficiency.

Key node construction simulation

 

Five, BIM and integrated decoration

Construction of the decoration product library

As an industrialized production mode, the integration of civil construction and decoration can promote the improvement of production efficiency in the whole process. Integrating the standardized design of the decoration stage into the design stage can effectively allocate the production resources.

Hardcover product library construction

Visual design

In-room rendering through the convenience of visualization can ensure the quality of the interior space, helping designers to refine and optimize the design. BIM design and simulation installation of uniform parts such as the whole bathroom can realize design optimization, cost statistics and installation guidance.

Home library

Information integration

The product information of each furniture manufacturer in the industrial chain is integrated into the BIM model to provide data support for the calculation of the internal parts. Parts and furniture that need to be customized for decoration can be docked with the manufacturer at the initial stage of the project to realize the mass production of the furniture factory. At the same time, the civil construction interface is reserved, and the modular coordination and electromechanical support system are ensured according to the principle of modular integration. Coordination and overall coordination.

Hardcover integrated bathroom

Assembled decoration

The decoration design work should be carried out at the same time of the building design, and the living room space is decomposed into several functional areas, each area is regarded as a relatively independent functional module, such as

Kitchen module, bathroom module. In the modular design, considering the size relationship of the parts, the standard modulus is used to design the space and parts to facilitate the factory production of the parts.

Integrated renovation process

 

Sixth, BIM and information management

Economic calculation analysis

The main principle of economic calculation is to achieve "quasi-quantity, estimation", which is divided into prefabricated component parts and cast-in-place component parts according to the composition and pricing principle of industrial buildings. Through the classification and statistics, the engineering quantity analysis of the design scheme can be quickly carried out, so as to compare and select the schemes, and then the engineering quantity list of the project is calculated by the determined amount of engineering quantity combined with the area, so as to realize the initial control of the cost in the planning stage.

Bill of quantities

RFID and other traceable building quality management

Realize building information integration on the same BIM model, BIM services throughout the entire life cycle of the project. On the one hand, it can realize the informationization of the housing industry; on the other hand, it can integrate the actual needs and technologies in the production, construction and operation and maintenance phases into the design stage, preview the reality in the virtual environment, and truly realize the information integration advantages of BIM information application. . By pre-embedding digital tags such as chips in prefabricated components, and recording corresponding quality management information in all important aspects of production, transportation, construction and management, the responsibility for building quality can be achieved, thereby improving the quality of construction.

BIM serves the entire life cycle process

Real-time, global, digital management with BIM cloud platform

The combination of BIM information technology and cloud technology can effectively transmit information seamlessly in the cloud, open up horizontal links between departments, and set the client through mobile devices to view the information needed by the project in real time. The project cooperates with the mobile office to improve the accuracy of the project.

 

BIM cloud platform

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