A lightweight display method and system for massive data BIM model

Abstract

The invention discloses a light-weight display method for a BIM model of massive data, comprising the following steps: creating an initial overall BIM model according to the type of buildings of a water conservancy and water diversion project to be modeled; converting the initial overall BIM model into a light-weight display BIM model in gltf format; obtain massive data related to the water conservancy and water diversion project buildings to be modeled, classify, store and preprocess it, and associate the massive data with each BIM sub-model in gltf format; build lightweight Quantitative platform; load the BIM model in the visible area of ​​the lightweight platform hierarchically, and remove the invisible BIM components in the BIM model; retrieve the relevant BIM components in the BIM model, and display the corresponding related data in a targeted manner. The invention can integrate massive data, avoid the loss of geometric information, and improve the display speed of the BIM model.

Description

technical field [0001] The invention relates to the technical field of construction engineering, and more particularly to a method and system for light-weight display of BIM models of massive data. Background technique [0002] With the rapid development of my country's water conservancy industry and the continuous improvement of the level of operation and maintenance, water conservancy projects can rely on a more intuitive and convenient information cloud platform for operation and maintenance. However, due to the large number of buildings involved in water conservancy projects, complex structures, and huge amount of data and information, it is inevitable to encounter many problems such as information omission and positioning difficulties in the process of operation and maintenance. In order to enable the water conservancy project to better carry out the later operation and maintenance work, it is necessary to enable the water conservancy project buildings and information t...

AI Technical Summary

Problems solved by technology

[0004] First, the model simplification method: the structural characteristics applicable to the BIM model itself are not very important in the visualization application, and a simple geometric model can be drawn to replace the original complex and large file BIM model. This method cannot reflect the geometric details of the BIM model , the accuracy of the model is very low, which does not reflect the value of the BIM model, only pays attention to non-geometric information, and cannot provide a realistic and intuitive model look and feel

[0005] Second, model format compression method: suitable for BIM models with large model size, complex model file format, and low reading efficiency. Although this method can greatly reduce the size of the model file, it will lose a lot of non-geometric information, making the BIM model It only represents the geometric shape and does not give full play to the completeness of the BIM model information

[0006] Third, the rendering optimization method: it is suitable for BIM models that are inconvenient for further processing. By adjusting and optimizing the rendering algorithm of the GPU, the rendering area and data transmission form of the BIM model are controlled. This method requires developers to continuously optimize the algorithm. The technical cost is high, and the final lightweight display effect cannot be guaranteed

[0007] Therefore, there are not many methods for lightweight display of BIM models at present, and various methods also have different defects such as not integrating massive data, loss of geometric information, etc., and the degree of integration with practical applications is not high

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