A Web-oriented method for data publishing and visualization of building information model

Abstract

The invention discloses a network-oriented building information model data publishing and visualization method. The concrete steps are as follows: reading the building model file and extracting the building model information; According to the model extraction information, the corresponding relationship between geometry and attributes of the model is generated and stored in the network database. estab,ishing a model-distance layering display mapping table; The octree spatial cube index is established according to the model, and the spatial position index information of each building component is calculated. The output component compresses the file to carry on the network release; Each child node of the index is traversed according to the viewpoint position, and the distance R from the center point of the child node cube to the viewpoint position and the visual distance D of the component are compared to form a real-time loading component list; Obtain the component model published on thenetwork from the list and drawing it. The invention can reduce the difficulty of releasing the building information model network, quickly realize the network release of the model data, and fill theinformation gap caused by the huge building information model data which is difficult to be shared on the network.

Description

technical field [0001] The invention relates to the field of architectural engineering, in particular to a network-oriented method for publishing and visualizing building information model data. Background technique [0002] The building information model is based on three-dimensional digital technology and integrates various related information of construction projects. It is a detailed digital expression of project-related information and can be used repeatedly by project participants from different angles to improve the quality of all participants. The work efficiency and data consistency at each stage of the square is to realize the full interoperability of information among various disciplines in the construction industry and improve the reuse rate of construction information, so as to achieve the purpose of reducing construction costs and improving production efficiency. Because the building information model has the advantages of visualization, coordination, simulatio...

AI Technical Summary

Problems solved by technology

Although the use of two-dimensional graphic design allows all parties in the construction project to quickly obtain the basic information of the building, and the drawing information is easy to understand, but it also has the following disadvantages: it is difficult to achieve the whole process of collaborative work because of the need for detailed design and drawing of special structures. There are defects such as design conflicts, easy loss of files, and difficulty in sharing file information. Moreover, the two-dimensional plane information is relatively abstract, which is not conducive to on-site construction personnel for equipment installation and construction. Currently, there are also three-dimensional building information models, which can allow design and construction parties to control and manage , and work together, but there are large 3D model files, and the browsing of model files has high requirements on the hardware of electronic devices. Usually, model file copies are used to share, and it is difficult to achieve the requirements of rapid release, sharing and visualization of building information on the Internet.

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