Flood model construction and dynamic display method based on BIM and 3D real scene model

Abstract

The invention discloses a flood model construction and dynamic display method based on BIM and three-dimensional real scene model, which integrates three-dimensional design platform, geographic information platform, hydrodynamic modeling platform and three-dimensional real scene modeling platform through cross-platform technology integration, and applies three-dimensional The real scene model builds a high-precision flood model and performs 3D dynamic display; 1. Production of 3D real scene model, DEM, orthophoto; 2. Construction and calculation of flood analysis model; 3. Export and conversion of flood calculation results; 4. Integration of reality model, BIM design model and flood calculation results; 5. 3D dynamic display of flood results. The present invention integrates the three-dimensional design platform, the geographic information platform, the hydrodynamic modeling platform, the three-dimensional visualization rendering platform, etc. through cross-platform technology integration, builds a flood model on the basis of the real-scene model data produced by the oblique photography of the UAV, and superimposes the real-scene model to carry out The 3D dynamic display of the flood greatly improves the accuracy of the flood model.

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.

Images