Flood model building and dynamic displaying method based on BIM and three-dimensional live-action model

Abstract

The invention discloses a flood model building and dynamic displaying method based on BIM and a three-dimensional live-action model. A three-dimensional design platform, a geographic information platform, a hydrodynamic modeling platform and a three-dimensional live-action modeling platform are subjected to cross-platform technological fusion, the three-dimensional live-action model is applied tobuild a high-precision flood model, and three-dimensional dynamic displaying is performed. The method includes: 1, producing the three-dimensional live-action model, a DEM and an orthoimage; 2, building a flood analysis model and calculating; 3, exporting and converting a flood calculation result; 4, integrating the live-action model, a BIM design model and the flood calculation result; 5, three-dimensionally and dynamically displaying a flood result. Cross-platform technological fusion is performed on the three-dimensional design platform, the geographic information platform, the hydrodynamicmodeling platform and a three-dimensional visual rendering platform, the flood model is built on the basis of live-action model data generated by inclined photographing of an unmanned aerial vehicleand overlaid with the live-action model for three-dimensional dynamic display of flood, so that accuracy of the flood model is improved substantially.

Description

technical field [0001] The invention relates to the application of a professional hydrodynamic model in water conservancy projects, in particular to a flood model construction and dynamic display method based on BIM and a three-dimensional real scene model. Background technique [0002] BIM is Building Information Modeling, which is not only a manifestation of engineering 3D design results, but also a design concept, method, process and specification. The 3D real scene model is to construct a real-world 3D model from a series of photographed pictures based on a set of aerial triangulation calculation algorithms based on UAV oblique photography technology, and finally obtain a realistic 3D real scene after superimposing the texture of the photographed pictures Model; 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 rivers, seas, and ...

AI Technical Summary

Problems solved by technology

At present, hydrodynamic models, especially flood models, are often constructed based on low-precision topographic maps, resulting in insufficient model accuracy and display effects, and cannot give people an immersive and realistic flood simulation experience.

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