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IFC data efficient storage method based on label attribute graph structure

An attribute graph and attribute technology, which is applied in file access structure, other database retrieval, and other database indexes, etc., can solve problems such as difficulty in computational reasoning, low query efficiency, and difficulty in storing associated information.

Pending Publication Date: 2021-02-05
XIAN UNIV OF TECH
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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for efficiently storing IFC data based on a tag attribute graph structure, construct an association relationship storage model, and solve the problem of difficulty in storing inter-instance association information in existing IFC data efficient storage, complex storage model design, and difficult query Problems of low efficiency and difficult computational reasoning

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  • IFC data efficient storage method based on label attribute graph structure
  • IFC data efficient storage method based on label attribute graph structure
  • IFC data efficient storage method based on label attribute graph structure

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Embodiment Construction

[0059]The present invention will be described in detail below with reference to the drawings and specific embodiments

[0060]An efficient storage method of IFC data based on the label attribute graph structure, such asfigure 1 As shown, it specifically includes the following steps:

[0061]Step 1. Extract nodes, edges, attributes and labels according to IFC official documents, and establish ISG based on the label attribute graph structure;

[0062]Step 2: Perform segmentation processing on the IFC file to be stored based on the structural characteristics of the IFC file;

[0063]Step 3. Combine IFC Schema Graph to query and match IFC file entity instances;

[0064]Step 4. According to the matching result in step 3, extract nodes, edges, attributes and labels from the split IFC file, and build IFG based on the label attribute graph structure.

[0065]Step 1 is implemented according to the following steps:

[0066]Step 1.1, read the IFC Schema document written based on EXPRESS language, convert Enumerati...

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Abstract

The invention discloses an IFC data efficient storage method based on a label attribute graph structure. The IFC data efficient storage method comprises ISG construction, IFC File segmentation matching and IFG construction. The technical characteristic of the invention is also that four special IFC entity mode conversions with export attributes are solved. The constructed IFC Schema Graph comprises IFC complete information except for auxiliary IFC file storage management requirements, and can be applied to IFC completeness check, IFC information intelligent query analysis and the like. According to the method, the IFC model file is subjected to storage management, a BIM information circulation mode based on the IFC file is converted into an information interaction mode based on IFC data, and digital transformation and intelligent upgrading of constructional engineering are greatly promoted. Meanwhile, efficient retrieval of complex query requirements such as a multi-hop relationship inan IFC file is supported, and a solid data basis and technical support are provided for intelligent applications such as information calculation and semantic reasoning based on an IFC model.

Description

Technical field[0001]The invention belongs to the technical field of civil engineering intelligentization, and relates to an efficient storage method of IFC data based on a label attribute graph structure.Background technique[0002]With the acceleration of the pace of intelligence, the development of BIM technology in the field of civil engineering has also changed from shallow model-based applications such as three-dimensional visualization, collision detection, and construction management to auxiliary design, automatic compliance inspection, and construction technology disclosure. In-depth application based on information. The internationally accepted IFC data standard is used to express 3D design information model data, which effectively solves the problem of data interaction between different modeling software.[0003]With the popularization of BIM technology and the continuous expansion of model volume, the size of the .ifc data file exported by the 3D design information model has...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F16/13G06F16/901
CPCG06F16/13G06F16/9024
Inventor 黑新宏杨明松李宇超赵钦朱磊马召熙
Owner XIAN UNIV OF TECH
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