With the development of information technology,Bentley ProjectWise 3D digital information has been integrated into all aspects of public life, especially in the fields of film and television media,Bentley BIM industrial manufacturing, and network communications. At the same time, 3D technology is gradually penetrating into the entire engineering and construction industry and digital operations management.

What is BIM

BIM is Building Information Modeling. It is an engineering data model created using 3D digital technology, and the model is used to integrate all kinds of information related to the construction project in order to improve the efficiency of engineering project design, construction and operation.

The key technology of BIM is to create a virtual 3D model of a construction project on a computer and use digital technology to provide a complete information database for the construction project. This database contains not only geometric, specialized and state information,BIM Viewer but also state information of non-component objects (e.g. space and motion). The information-rich 3D model of the construction project can greatly improve the integration of the construction project information and provide a platform for interaction and sharing among the stakeholders of the construction project. This information can help stakeholders in a construction project to improve efficiency, reduce costs and improve quality. Combined with more relevant digital technologies, the engineering information contained in a BIM model can also be used to simulate the state and changes of a building in the real world so that project stakeholders can have the most complete analysis and assessment of the success or failure of the entire project before constructing the building.

Features of BIM

3D Visualization

Visualization is a form of "what you see is what you get". For the construction industry, 3D planar visualization is very useful. For example, the information about each component is expressed by drawing lines on the often-obtained construction drawings, and the true form of the structure needs to be imagined by the participants in the construction industry themselves. Currently buildings come in different forms and complex shapes, so such floor plans present many limitations. So BIM provides a kind of visualization idea, which allows people to form a three-dimensional physical graphic from the previous linear components and show it to people.

Of course, at present, there are many problems in our country design work unit will do a variety of rendering, this rendering is subcontracted to other professional rendering a team needs to be made through the reading of the design of the system made of linear information technology production, not through the information system of the components automatically generated, the lack of interactivity with the components of the enterprise and feedback. The visualization mentioned in BIM is a method that can form a visualization with interactivity and feedback between the components, and the analysis of the results of this data visualization not only can be directly used by students for the display of renderings and report generation, but more importantly, the communication, discussion, and decision-making capabilities in the process of the project's design, construction, and operation activities are all carried out in a visualized state.

Simulation

In the design stage, BIM can simulate some things that need to be simulated in the design, such as: energy-saving simulation, emergency evacuation simulation, sunlight simulation, heat transfer simulation, etc. BIM can simulate the operation process of the logistic system and the secondary healthcare system in the planning and design of the hospital building, and optimize the functional layout.

In the bidding and construction phases, 4D simulation (3D model plus project development time) can be carried out, i.e., simulating the actual construction according to the construction organization design, so as to determine the reasonable construction plan to guide the construction. 5D simulation (cost control based on 3D model) can also be carried out to achieve cost control. In the later operation stage, daily emergency handling can be simulated, such as earthquake personnel escape simulation and firefighter evacuation simulation.

Information Concentration and Optimization

In fact, the whole system design, construction, operation process management is such a huge amount of data information technology centralization and continuous development and optimization process, on the basis of BIM we can do better concentration, better optimization. There is no timely and accurate information to do not reasonable optimization results, BIM model analysis provides information on the actual problems of the building, including geometric information, physical teaching information, rule information, but also provides the actual work of the building after the change exists. Most of the complexity of modern buildings exceeds the limits of the ability of the participating community members themselves, and BIM and the various resource optimization tools that accompany it provide the possibility of further optimization of complex engineering project companies.

Application of BIM in the whole life cycle of construction

From the perspective of the whole life cycle of the building, the application of BIM research for enterprises to improve China's building services industry for planning, design, construction, operation of scientific information technology and economic level, and to promote the construction industry comprehensive education informatization and modernization, has a huge application of the market value and broad application prospects. With BIM in China is gradually recognized and applied, especially in the domestic environmental engineering project construction industry under the background of rapid development, BIM has been in the domestic existence of a number of large-scale engineering projects can be students actively learn to apply, emerged a lot of successful cases, fully demonstrated the value of BIM in the application of architectural and structural engineering-related industries. In the domestic part of the hospital engineering problems have begun to adopt BIM, will be used in the engineering professional construction and daily operation cost management.

BIM information is characterized by traceability, sharing and transparency throughout the entire life cycle of the project, making it a platform for intelligent (manufacturing) construction and digital hospital management.

The essence of establishing and maintaining a BIM model according to the project's construction schedule is to use the BIM platform to aggregate all project information from the project team, eliminate information silos in the project, and organize and store the information obtained in conjunction with the 3D model for all stakeholders to share at any time throughout the project.

Since the use of BIM determines the accuracy of the details of the BIM model, and since BIM tools alone cannot do it all, the industry is now using a "distributed" BIM modeling approach, where BIM models are created based on the existing conditions and uses of the project. These models can include: design models, construction models, schedule models, cost models, manufacturing models, operational models, etc., as needed.

These "distributed" models are often created individually by the relevant design, construction, or operations organizations, depending on their scope of work, and then synthesized through a unified standard. This will increase the difficulty of managing BIM modeling standards, version management, and data security, so sometimes the owner will commission an independent BIM service provider to unify the planning, maintenance, and management of the entire project's BIM application to ensure the accuracy, timeliness, and security of the BIM model information.

Implementation of BIM

Although BIM can bring a huge value for the development of the enterprise industry, but we also see that the implementation of BIM is not smooth sailing, one of the reasons is because of the lack of sufficient knowledge through the user of the implementation of BIM teaching methods and methods.

For designers using BIM, the implementation strategy of BIM needs to be fully considered before successfully implementing BIM. It is important to consider not only the purchase of software and progress training, but also the workflow and organizational changes that BIM will bring. For example.

What problems do you want BIM to solve?BIM can do a lot of things, but in the early stages of BIM implementation, it's best to set some specific goals and then select the right software tools and staffing based on those goals.

Will the existing design team learn BIM software and use it directly in their designs? Or will a new BIM team be formed in parallel with the existing design team? Many companies now prefer to create new, small BIM teams, starting with design assistance, such as specialized collision checking or green analysis, and then gradually expanding to using BIM software for the entire design process.

Do you have the right hardware and network environment? Hardware requirements for BIM software may be slightly higher than for 2D CAD software, but they are not out of the range of what is acceptable for most design firms.

BIM represents a new paradigm for teaching architectural and engineering design, not just the adoption of a new supporting information technology, and thus the organizational structure of this socially transformative team needs to be considered for business development. The team members involved in the pilot project should be flexible, enterprising, and have a big-picture perspective, as well as a passion for educating and promoting BIM.

Bim is not easy or cheap, but it is very effective. This is because BIM offers huge business advantages, but it requires a departure from traditional ways of working. The transition from manual drafting to CAD was a gradual process, and the transition to building information modeling technology is a true industrial revolution that requires much more careful planning, organization, and training. it may take a few years for BIM to become fully ubiquitous, but once it does, the management of hospital construction and operations will be very different from what it is today. Only by taking the first step in this process of dramatic change will you be able to take the lead in the market and become a leader in your industry.

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