What do I need to know about BIM modeling? How to model quickly?

The core of BIM is the creation of a virtual 3D model of a construction project and the use of digital technology to provide a complete and consistent information base for that model.Bentley ProjectWise The information is shared and transmitted throughout the life cycle of the construction project, enabling engineers and technicians to make correct understanding and effective response to various construction information, thus improving the quality and progress of the project.

At present, because BIM technology is in the development stage in China, there are many obstacles in the application process of engineering projects. Ultimately,Bentley BIM these barriers are due to the inability to use BIM correctly and to understand BIM simply as modeling.

The creation of BIM model is far from a simple 2D engineering design drawings, the quality of BIM modeling will affect the engineering technology itself,BIM Viewer so in the BIM modeling process, our country needs to be carried out to consider the following main elements in order to improve the learning model can be applied to the quality of service.

BIM modeling requirements

1. Model standard establishment

In the modeling process of large-scale engineering projects, there are more levels, features and components involved, which requires the BIM team to establish standard modeling rules before modeling to ensure the integration of the merged model and avoid the imbalance of model quality and depth.

2. Model Naming Rules

In the process of modeling, the number of BIM model files will grow exponentially with the depth of the model and the increase of design changes. In order to distinguish model files created in different projects, different specialties and different times, and shorten the time to find the target model, model naming rules need to be unified in the process of model building.

3. Model Depth Selection

The depth of the BIM model is different in each stage of the whole life cycle of the building. For example, in the design phase, only the appearance and general layout of the building needs to be known, and the accuracy of the model should not be less than lod100; in the construction phase, the length, size and number of components need to be known, which requires the model's accuracy to reach lod300. the modeling depth needs to be based on the different phases of the implementation of the project, and the establishment of unwanted levels of accuracy.

4. Model Completeness Demonstration

The completeness of the BIM model mainly includes two aspects: one is the completeness of the model itself, and the other is the completeness of the model information. The completeness of the model itself refers to the complete display of all floors, specialties and components of the building. The completeness of the model information means that the model contains the complete information of the construction project which is consistent with the actual situation. The completeness and authenticity of the model information can provide strong information guarantee for the later construction and operation and maintenance of the project.

5. Model file size control

With the gradual involvement of the parties involved, the amount of BIM model information continues to develop and increase, and the memory occupied by the model design files continues to become larger, resulting in the network model through the view, the computer reading and writing speed has been unable to keep up in a timely manner. Therefore, the size of model-related files should be strictly required to control, once the enterprise exceeds a model file 200M, it will be split to reduce the burden on the computer.

6. Model integration standards

In the professional integration of the model, the accuracy of each sub-model should be ensured, as well as the consistency of the source.

7.Model Delivery Rules

In the model delivery stage, attention should be paid to the handover of delivery documents and modeling information models, in which the information conveyed by the building information model must be complete and consistent with the actual situation.

BIM rapid modeling methods

1) Two-dimensional design

Use a set of drawing tools to efficiently create 2D geometry and draw accurate engineering drawings. Use permanent constraints to quickly transform your design from concept to final product to maintain your design intent.

2) 3D Design

Develop models using a range of 3D design tools. Build and edit curves, surfaces, meshes, features and solid models. Build parametric functional components using predefined changes to simplify the management and search of multiple similar components.

3) Develop Hyper Models

Present a document and associated design proceeding information in the spatial development environment of a 3D model, significantly improving improvements as well as their organization and clarity. Easily navigate from the contents of one document or model to the contents of other state documents or models.

4) Analyze and Visualize Models

Analyze and visualize models based on geometric structures or attributes. Identify and resolve conflicts; perform real-world daylight and shading analysis. Apply real-time display styles to visualize models based on height, slope, azimuth, and other embedded attributes of each object.

5) Automate common tasks

Accelerate design tasks and related workflows with intelligent interactive capture. Increase productivity with dynamic data entry flat views. Customize and group tools and tasks to reduce keystrokes with keyboard position mapping features and quickly customizable cursor menu functions.

6) Control and protect files

Ensure that only specific people can view and/or edit documents within predefined time frames. Digital signatures can be used to ensure document integrity and to control digital permissions for viewing, editing, printing and copying file content, including predefined expiration dates that limit file access time.

2. Focus on freedom of design

1) Find relevant items by spatial location in the geographic environment

Convert and integrate geospatial information from hundreds of supported coordinate systems into your designs.

2) Integrate common design formats.

Easily share and use important industry formats

3) Integrate reference design content

View and work with other people's design information in real time using 2Du002F3D DGN, DWG's real-time reference capabilities and large image files that update on demand. You can even naturally add PDF reference files to your own designs.

4) Integrated Point Cloud

Easily integrate a wider range and volume of point cloud data information into your design work environment. You can point cloud data can be analyzed visualization technology processing, rendering and measurement, in order to deepen the understanding of the current situation, and accelerate the speed of dimensioning and modeling development.

5) Integrated raster images

Easily integrate and learn from a variety of different types of raster imagery, including aerial and satellite imagery, as well as by scanning technical documents. Choose the format we need from dozens of supported file data formats.

6) Integrated Realistic Mesh

Integrate a realistic, 3D model with a photo map or living grid into your design. These highly realistic models can be used directly in the design environment as the basis for design and construction modeling to help you design higher quality models faster.

7) Manage Design Changes

Track and easily understand changes made to design documents throughout their lifecycle, even at the component level. View, plot and selectively roll back any individual change in the document history.

8) Work in a personalized environment

You can rest assured that you are working on each project in the proper environment, as the application automatically applies the necessary settings and standards. You can also use personalized suggestions to help you take full advantage of the software's capabilities.

9) Extend and customize a workflow

Customize the user interface using the range of tools provided to streamline your workflow and integrate with enterprise systems.