BIM-based three-dimensional engineering curve automatic fitting method

An automatic fitting and engineering technology, applied in instrumentation, calculation, image data processing, etc., can solve problems such as transformation of 3D model primitive information of engineering curves, and achieve the effect of improving efficiency and management efficiency.

Active Publication Date: 2021-01-29
NANCHANG UNIV
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Problems solved by technology

[0005] The purpose of the present invention is to provide a BIM-based three-dimensional engineering curve automatic fitting method, to solve the technical problem that...

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  • BIM-based three-dimensional engineering curve automatic fitting method
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  • BIM-based three-dimensional engineering curve automatic fitting method

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Embodiment Construction

[0034] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings and implementation examples. The specific embodiments described here are only used to explain the technical solution of the present invention, and are not limited to the present invention.

[0035] The content of the above invention can be realized by computer programming language, and programming can be performed by using DesignScript and Python language in the environment of Dynamo.

[0036] Embodiment is illustrated with the road center line of road engineering as an example, and the operation steps are as follows (see figure 1 ):

[0037] Step 1: Interact the plane curve of the engineering curve in AutoCAD to Dynamo (see figure 2 );

[0038] 1. Select the plane road centerline in AutoCAD;

[0039] 2. Through the Active.X technology, call the "Autocad.Appl...

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Abstract

The invention relates to the technical field of civil engineering and municipal engineering, and discloses a BIM-based three-dimensional engineering curve automatic fitting method, which mainly comprises the steps of automatically obtaining graphic information of a plane curve and a longitudinal section curve of AutoCAD through a visual programming plug-in Dynamo, parameterizing design control points and creating a control point list; extracting and calculating coordinate information of the control point positions, automatically outputting a coordinate information table of the control point positions, generating three-dimensional point positions according to the coordinate information, fitting the three-dimensional point positions into a three-dimensional engineering space curve, outputting a model to Revit, and mounting attribute information. Operation is carried out on a visual programming plug-in Dynamo, programming is carried out by using DesignScript and Python languages, a three-dimensional engineering curve model and a control point position coordinate information table are automatically generated, the control point position measurement working precision during subsequent construction is improved, meanwhile, attribute management information is mounted in the three-dimensional engineering curve model, and the engineering information management efficiency is effectively improved; and construction quality is controlled.

Description

technical field [0001] The invention relates to the technical field of civil engineering and municipal engineering, and relates to a method for automatically fitting three-dimensional engineering space curves by extracting engineering curves in CAD drawings based on BIM technology. Background technique [0002] Building Information Modeling (Building Information Modeling) is based on the relevant information data of the construction project as the basis of the model to establish the building model, and simulate the real information of the building through digital information simulation. It has five characteristics of visualization, coordination, simulation, optimization and plotting. [0003] As an important component of project information elements, engineering curve is the key collection object in the data production process, reflecting the geometric properties of components and expressing project information of the project. The traditional expression method of engineerin...

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Application Information

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IPC IPC(8): G06T17/00
CPCG06T17/00G06T2210/04
Inventor 贾璐洪可
Owner NANCHANG UNIV
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