Lightweight display method and system for mass data BIM model

Abstract

The invention discloses a lightweight display method for a mass data BIM (Building Information Modeling). The lightweight display method comprises the following steps: creating an initial overall BIMaccording to the category of a water conservancy diversion and diversion engineering building to be modeled; converting the initial overall BIM model into a lightweight displayed BIM model in a gltf format; obtaining mass data related to a to-be-modeled water conservancy diversion and diversion engineering building, performing classified storage and preprocessing on the mass data, and establishingassociation between the mass data and each BIM sub-model in the gltf format; building a lightweight platform; carrying out hierarchical loading on the BIM model in the visual area of the lightweightplatform, and removing invisible BIM components in the BIM model; retrieving related BIM components in the BIM model, and displaying related data corresponding to the related BIM components in a targeted mode. According to the method, massive data can be fused, geometric information loss can be avoided, and the display speed of the BIM can be increased.

Description

technical field [0001] The present invention relates to the technical field of construction engineering, and more specifically relates to a lightweight display method and system for a massive data BIM model. Background technique [0002] With the rapid development of my country's water conservancy industry and the continuous improvement of operation and maintenance levels, water conservancy projects can rely on more intuitive and convenient information cloud platform conditions for operation and maintenance. However, due to the large number of buildings, complex structures, and huge amount of data information involved in water conservancy projects, it is inevitable to encounter many problems such as missing information and difficult positioning during the operation and maintenance process. In order to enable water conservancy projects to better carry out post-operation and maintenance work, it is necessary to enable the buildings and information of water conservancy projects...

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

Images