A Lossless Method for Constructing Spatial Semantic Database from BIM Model

Abstract

The invention discloses a method for constructing a spatial semantic database from a BIM model without damage, and belongs to the technical field of spatial geographic information data conversion methods. Including creating a new table, defining the table structure fields, defining the relationship between the tables, and sorting out the table records of the BIM objects according to the defined database structure; finally building the database to obtain a non-destructive BIM spatial semantic database; the present invention has the property structure of BIM directly The geometric structure data is completely preserved, the BIM model is managed in the form of a spatial semantic database, and the semantic relationship between entities is expressed through the organizational structure of the database, so that the BIM model can be introduced into the field of spatial information without loss, and it can provide information for the visualization application field and intelligent analysis field. data support.

Description

technical field [0001] The invention relates to a method for constructing a spatial semantic database from a BIM model without damage, and belongs to the technical field of using computer technology to assist smart city or digital twin city management methods, and specifically belongs to the technical field of spatial geographic information data conversion methods. Background technique [0002] With the development of science and technology, objects and businesses in the physical world of human beings are being reorganized and reproduced in the computer world through a series of technical means: from early design drawings, two-dimensional electronic maps, to the current three-dimensional design Models, three-dimensional digital maps, and various technologies aim to realize the mapping, simulation, monitoring and guidance of the physical world through an increasingly real and accurate three-dimensional digital world. [0003] In the process of restoring the physical world to ...

AI Technical Summary

Problems solved by technology

[0009] 1. There is data loss in the fusion of data levels; firstly, some data has been lost when converting from any BIM software to IFC; on the other hand, due to the differences in geometric expression and object semantics between the two data formats, and The IFC model contains far more semantic information than the CityGML model, so this conversion method inevitably produces errors and information loss problems

[0010] 2. Application-level integration only extracts and transforms data for a specific application, which has very large limitations, and can only solve a specific problem, and the scalability is not strong

[0016] In short, none of the methods in the prior art can achieve lossless data conversion and storage

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