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• 建筑与城市信息模型 • 上一篇    下一篇

基于构件形状分布和配准位置的BIM 模型对比方法

  

  1. (1. 北京建筑大学电气与信息工程学院，北京 100044；
    2. 建筑大数据智能处理方法研究北京市重点实验室，北京 102616；
    3. 盈嘉互联(北京)科技有限公司，北京 100041；
    4. 北京市首发高速公路建设管理有限责任公司，北京 101117)
  • 出版日期:2020-06-30 发布日期:2020-08-18
  • 基金资助:
    国家自然科学基金项目(71601013)；北京市自然科学基金项目(4202017)；北京市青年拔尖人才培育项目(CIT&TCD201904050)；北京建筑
    大学青年英才项目

Comparison method of BIM models based on component shape distribution and registration position

  1. (1. School of Electrical and Information Engineering, Beijing University of Civil Engineering and Architecture, Beijing 100044, China;
    2. Beijing Key Laboratory of Intelligent Processing for Building Big Data, Beijing University of Civil Engineering and Architecture, Beijing 102616, China;
    3. BIM Winner (Beijing) Technologies Co. Ltd., Beijing 100041, China;
    4. Beijing Capital Development Expressway Construction Management Co. LTD, Beijing 101117, China)
  • Online:2020-06-30 Published:2020-08-18

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摘要： 建筑全生命周期的各个阶段中会出现各种不同版本的BIM 模型，其间的差异可以
对建筑的施工和运维阶段提供决策支持。大部分BIM 模型对比都是基于目视检查、手动计数和
选择性属性检查。尽管目前有学者和相关机构研究了一些自动比较BIM 模型的方法，但大多依
赖于模型中构件的ID，而且比较的结果无法直观地体现到具体构件、具体属性上。针对以上问
题，提出了一种基于形状分布和位置配准的BIM 模型对比方法，即提取构件特征进行构件匹配，
从构件级进行BIM 模型对比。首先根据构件的几何信息构造构件的形状分布，计算类型相近构
件的形状分布之间的相似度；再配准构件的位置，计算位置之间的相似度；然后结合2 个相似
度进行构件匹配，比较匹配构件之间的差异；最后得出模型间的差异，并利用WebGL 进行可
视化展示。该方法忽略了构件ID 变化对模型对比的影响，并且能得出模型构件级别的差异。

关键词: 建筑信息模型, 模型对比, 忽略构件ID, 形状分布, 构件匹配, 可视化展示

Abstract: Various versions of BIM models will appear in different stages of the entire life cycle of a
building, and the differences among these models can provide support for the decision-making in the
construction and operation of the building. Most BIM model comparisons are based on visual
inspection, manual counting, and selective inspection of attributes. Although some scholars and
relevant institutions have studied some methods of automatic comparison of BIM models, most of
them rely on the ID of components in the model, and the results of comparison cannot be directly
reflected in specific components and attributes. Aimed at these problems, a comparison method of BIM models was proposed based on shape distribution and registration position, extracting features
from components for component matching and compareing BIM models on the component level.
Firstly, shape distribution of the components was constructed based on their geometric information to
calculate the similarity between the shape distribution of components of similar types. Secondly, the
positions of the components were matched and the similarity between the positions was calculated.
Then two similarity degrees were combined to match components and the differences between
matched components were compared. Finally, the difference between models was obtained, and
WebGL was used for visual presentation. This method disregards the influence of the changes of
component ID on model comparison, capable of working out the differences among models on the
component level.

Key words: building information modeling, model comparison, ignore component ID, shape distribution, components matching, visual presentation