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WebGL-based three-dimensional model display method and corresponding Web-BIM engineering information integration management system

A technology of three-dimensional model and display method, which is applied in the field of construction industry information, can solve the problems of lack of effective connection, inability to realize interactive data visualization of data format, and no introduction of combination methods, etc.

Inactive Publication Date: 2016-08-31
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the application of BIM in the construction engineering industry is still at some specific stages, and it cannot really realize the application for the whole life cycle of construction engineering, and there is a lack of effective links between various stages.
[0005] There are many types of BIM modeling software, and there are many data formats. There are great obstacles in the data interaction between various software systems, which leads to the blockage of information exchange and sharing among the project participants, forming an "information island". "Phenomenon, it is impossible to carry out effective integrated management of project-related data information
[0006] Some existing engineering integration management systems based on BIM technology are based on the C / S architecture, which cannot realize the heterogeneous synchronous interaction of project management information, has high requirements on the software system of the client, and has high maintenance costs
At the same time, traditional integrated management systems cannot achieve unified data format interaction and data visualization
[0007] After searching, it was found that the Chinese invention patent application with application number 201410222073.5 and application publication number CN105095323A proposed "a three-dimensional building webpage display and control system for the Internet of Things based on BIM and WebGL", but only briefly mentioned BIM and WebGL. combined, and did not introduce a specific combination method

Method used

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  • WebGL-based three-dimensional model display method and corresponding Web-BIM engineering information integration management system
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  • WebGL-based three-dimensional model display method and corresponding Web-BIM engineering information integration management system

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0104] like figure 1 As shown, the WebGL-based three-dimensional model display method of the present embodiment includes:

[0105] The first step is to convert the IFC model file of the BIM engineering project into an OBJ model file based on IFCOpenShell:

[0106] S1. Analyze the data structure of the IFC model file;

[0107] S2. extract the geometric information in the IFC model file, and obtain the vertex coordinate information under the local coordinate system; convert the vertex coordinate information into the model vertex data under the world coordinate system to form an array of vertex information;

[0108] S3. Extracting the normal data information in the IFC model file to form a normal information array;

[0109] S4. Extract the texture data information in the IFC model file to form a texture information array;

[0110] S5. Extract material information in the IFC model file to form a material rendering array;

[0111] S6. Using the vertex information array, the norma...

Embodiment 2

[0129] like Figure 5 As shown, the Web-BIM engineering information integration management system of this embodiment includes a system database, and a data interaction module, a GIS integration module, an information query module, and a user management module that are respectively connected to the system database by communication;

[0130] The data interaction module is used to convert the BIM engineering project data into IFC format data and store it in the system database;

[0131] The GIS integration module is used to read the GIS information of the BIM engineering project from the system database and integrate it into the preset electronic map;

[0132] The information query module is used to obtain the corresponding data from the system database, and display the integration result obtained by the GIS integration module on the webpage, adopt the three-dimensional model display method based on WebGL in embodiment 1 to display the three-dimensional model of the BIM engineeri...

Embodiment 3

[0160] The Web-BIM engineering information integration management method of this embodiment includes:

[0161] The data interaction step is used to convert the BIM engineering project data into IFC format data and store it in the system database;

[0162] The GIS integration step is used to read the GIS information of the BIM engineering project from the system database and integrate it into the preset electronic map;

[0163] The information query step is used to obtain the corresponding data from the system database, and display the integration result obtained in the GIS integration step on the webpage, using the three-dimensional model display method based on WebGL in Embodiment 1 to display the three-dimensional model of the BIM engineering project on the webpage, and in the The web page provides users with browsing and querying of textual data, as well as project progress simulation, collision simulation and roaming display;

[0164] The user management step is used to i...

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Abstract

The present invention relates to a WebGL-based three-dimensional model display method and a corresponding Web-BIM engineering information integration management system. The three-dimensional model display method comprises converting an IFC model file of a BIM engineering project into an OBJ model file; and displaying a three-dimensional model in a browser page supporting WebGL by using JavaScript program through OBJ-JavaScript interaction according to the OBJ model file obtained in the first step. The management system comprises a system database, and a data interaction module, a GIS integration module, an information query module, a user management module and a management decision support module which are respectively in communication connection with the system database. Web-3D browse of the BIM model is achieved by utilization of the WebGL technology.

Description

technical field [0001] The invention relates to a three-dimensional model display method based on WebGL and a Web-BIM engineering information integrated management system using the method, belonging to the field of construction industry information technology. Background technique [0002] With the emergence of a large number of construction projects, the scale of engineering construction and the increasing complexity of projects, a large number of new large-scale tower building / construction machines and construction schemes have emerged. Faced with the challenge of no ready-made case reference, the construction unit’s previous working methods under the guidance of experience have gradually been unable to adapt to the trend of transformation from construction enterprises in the industry to management-oriented construction enterprises. The many characteristics of BIM (Building Information Modeling) technology enable its application to meet the requirements of transformation a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/30G06F9/445
CPCG06F9/44521G06F16/29G06F16/957
Inventor 徐照徐夏炎袁竞峰
Owner SOUTHEAST UNIV
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