Cross-platform hydrodynamic modeling method based on BIM (building information modeling) and GIS (geographic information system) techniques

Abstract

The invention discloses a cross-platform hydrodynamic modeling method based on BIM (building information modeling) and GIS (geographic information system) techniques. The method includes the steps: firstly, digging and backfilling a three-dimensional field; secondly, building a three-dimensional building model; thirdly, leading in and assembling a three-dimensional isomer model; fourthly, leadingout of three-dimensional model boundary lines: leading out XY coordinates of control points of the three-dimensional model boundary lines of engineering by the aid of a text format; fifthly, coordinate elevation extraction of three-dimensional model vertexes: encrypting the three-dimensional model vertexes of the engineering on a three-dimensional design platform, extracting coordinate elevation data of the three-dimensional model vertexes of the engineering by the aid of spatial data analysis processing capacity of GIS; sixthly, leading elevation and boundary data of the model into a hydrodynamic modeling platform; seventhly, building a hydrodynamic model. The method has the advantages that the method solves the problems a high-accuracy two-dimensional hydrodynamic model is built by the aid of a three-dimensional design model of the engineering and various isomer models, and refined modeling development of hydrodynamics is facilitated.

Description

technical field [0001] The present invention relates to the application of BIM (building information model; English abbreviation of Building Information Modeling) technology, GIS (geographic information system; English abbreviation of Geographic Information System) technology and hydrodynamic model in water conservancy projects, especially related to the application based on BIM and Cross-platform hydrodynamic modeling method for GIS technology. Background technique [0002] BIM is not only a form of expression of engineering 3D design results, but also a design concept, method, process and specification. Hydrodynamic models are generally constructed based on professional hydrodynamic theoretical formulas such as water flow energy equations, and are used to calculate and simulate the movement of river, sea, and lake water flows. At present, in the construction of hydrodynamic models, especially two-dimensional hydrodynamic models, they are often constructed only based on na...

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Problems solved by technology

At present, in the construction of hydrodynamic models, especially two-dimensional hydrodynamic models, they are often constructed only based on natural terrain, and the engineering design is only simple and generalized through single-point buildings and linear buildings, which cannot accurately reflect the three-dimensional shape of the project. The calculation accuracy of the model is low, and the shape of the local micro-flow field near the building cannot be obtained

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