What are the values of BIM technology in the construction stage?

In the long life cycle of an engineering project, the construction stage is the key stage of its real output in the physical space. No matter how to simulate the virtual space, under the interweaving of real time and space, any implementation details can't be avoided. Therefore, if we want to rehearse the construction process as realistically as possible in the virtual space, so as to examine the complex construction system planning, BIM models must be modeled from 3D (not necessarily at design time) and model components must be considered. This project focuses on the BIM model including the current situation of the construction site as the main carrier, and discusses the planning of the construction operation of the construction site and the simulation of the space allocation of facilities and equipment such as people, machines and materials. This operation can produce the layout of temporary facilities on site, and the layout of materials in various stages of construction, and confirm the potential and key points of space and time conflict, so as to choose a feasible construction scheme.

(2) 3D control and planning of BIM (digital layout)

The implementation of 3D control and planning is the process of using the 3D model of BIM to simulate the spatial configuration planning of building components in the construction stage and produce construction drawings. The so-called liftdrawings refers to the construction drawings of 2D/3D components by importing the original 2D graphic data into the BIM model and connecting the related 2D information to the model components by setting corresponding actions, which are specially provided to the site foreman for reference and use.

(3) design of construction system (virtual model)

BIM executive team based on BIM model, applied software tools designed by 3D system to design and analyze the construction details of a complex building system (such as formwork operation, curtain operation, soil retaining facilities, etc.), so as to improve the construction planning quality of the project. This operation can improve the constructability of complex building system, improve the construction productivity and increase the safety awareness of complex building system.

(4) Digitally set up

BIM executive team directly combines the 3D model information of BIM with automatic machinery manufacturing technology to construct some entity objects of the processing building. Digital assembly operation is equal to automatic processing and manufacturing operation. Just like traditional CAD/CAM operation, it can now be called BIM/CAM operation. First, the 3D model is processed into appropriate parts that need further processing and manufacturing, and then it is input into automatic mechanical processing and manufacturing to produce system components.

(5) 3D coordination operation

After the appearance of BIM terminology, its semantic connotation was quickly accepted by the industry. However, although the so-called software tools with BIM technology implementation function are full of potential in the future, it is still difficult to achieve the desired results, and the supporting engineering information management technology is still in place immediately.

however, one thing is certain: the functions provided by the existing BIM-related software tools, the full application of its parameter setting engine and 3D model visualization and other features to improve the traditional engineering coordination meeting have generally proved to be obvious, and the overall benefits will be even more exciting if the BIM model and other data center versions are properly controlled. Therefore, all projects that want to consider introducing BIM technology for the first time should seriously consider giving priority to the "3D Coordination of BIM". Based on the BIM model, the BIM executive team uses an automatic software to detect the conflict (interference) of 3D model components, and carries out the process of simulation, review and correction in the project coordination meeting, which is called "3D coordination operation". The application of BIM's 3D coordination work in design time is also very important.

(6) Modeling the current situation of the construction site

Based on the BIM model, the executive team developed a 3D model for the project, including the geographical environment, surrounding conditions, facilities and equipment on the construction site, or the space area containing facilities and equipment. This model can be developed in many ways, mainly depending on the current demand and the added value to future operations. The current situation data of the building constructed by this operation can be used to record the building history, provide documents about the site environment, and enhance the efficiency and accuracy of the documents describing the current conditions for subsequent application.

(7) Construction project planning (4D modeling)

The executive team of p>BIM uses a 4D model (plus a 3D model with time dimension) to effectively plan the sequential operation of each sub-project in the construction stage (which can also refer to the construction and renovation during the operation period). This task focuses on the construction project scheduling and the effective binding of components in BIM model and the operation planning process according to the time axis. 4D modeling is a powerful visualization and communication tool, which can give the project team, including the owner, a clearer understanding of the milestones of the project and the planning details of the construction implementation, so that the owner and the whole project participants can better understand the schedule of each construction stage and master the key path in the project.