What are the applications of BIM 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 virtual space, under the interweaving of real time and space, any implementation details can't be avoided. Therefore, in order to preview the construction process as realistically as possible in the virtual space, so as to investigate the complex construction system planning, BIM model must be modeled from 3D (not necessarily during design), and the composition procedure of model components and the order and time schedule of actual engineering construction must be considered. This project takes the BIM model including the current situation of the construction site as the main carrier, and discusses the planning of the construction work on the construction site and the simulation of the spatial configuration of facilities and equipment such as people, machines and materials. This operation can produce the layout of temporary facilities on site, as well as the layout of materials in various stages of construction, confirm the potential and key points of space and time conflict, and then choose a feasible construction scheme.

(Three-dimensional control and planning of BIM (digital layout)

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

(3) Building system design (virtual model)

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

(4) digital organization

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

(5) Three-dimensional coordination

After the appearance of BIM terminology, the semantic connotation of its definition 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 not easy to put the supporting engineering information management technology in place to achieve the expected results.

However, one thing is certain: the functions provided by the existing BIM-related software tools, making full use of the features such as its parameter setting engine and 3D model visualization to improve the traditional engineering coordination meeting, have been generally proved to be obvious. If the BIM model and other data center versions are properly controlled, the overall benefits will be even more exciting. Therefore, all projects that want to introduce BIM technology for the first time should seriously consider giving priority to "three-dimensional collaboration 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 simulates, reviews and corrects them in the project coordination meeting, which is called "3D coordination operation". The application of 3D coordination of BIM in design 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 under the current site conditions, including the geographical environment, surrounding conditions, site facilities and equipment, or the space area containing facilities and equipment. This model can be developed in many ways, mainly depending on the current demand and added value for future operations. The current status data of the building constructed by this operation can be used to record the history of the building, provide documents about the site environment, and enhance the efficiency and accuracy of the documents describing the current status for subsequent application.

(7) Construction project planning (4D modeling)

The executive team of BIM uses a 4D model (plus a 3D model with time dimension) to effectively plan the sequential operation of each subproject in the construction stage (which can also refer to construction, renovation, etc.). During operation). This task focuses on the schedule of construction projects, the effective binding of components in BIM model and the job planning process according to the time axis. 4D modeling is a powerful visualization and communication tool, which can make the project team, including the owner, more clearly understand the milestones of the project and the details of the construction implementation plan, so that the owner and the whole project participants can better understand the progress of each construction stage and master the key path in the project.