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史俊沛

（广东重工建设监理有限公司，广东 广州 510670）

摘 要：由于隧道下穿建筑物施工过程较为复杂，传统的建筑物施工变形预警系统大多基于二维的地理信息系统,往往具有可视化能力弱,模型预测准确度可靠差等缺点，提出基于改进BIM的隧道下穿建筑物施工变形预测算法。通过分析施工过程中建筑物产生的沉降变形，获取建筑施工节点变形向量，构建三维地质BIM模型，将建筑物节点变形向量输入至三维地质BIM模型中，通过在三维BIM地质模型上叠加动态的体元栅格三维空间场数据,不仅实现了数据的升维表达,同时也解决了传统静态BIM地质模型实时性和协同性表达弱的缺点，完成隧道下穿建筑物施工变形的预测。实验结果表明：所提方法可准确预测隧道下穿建筑物墙体的挠曲变形，具有较高的预测精度。

关键词：改进BIM模型；隧道下穿建筑物；变形预测

中图分类号：U452      

文献标志码：A   

文章编号：1005-8249（2024）02-0098-05

DOI：10.19860/j.cnki.issn1005-8249.2024.02.018

 

 

SHI Junpei

(Guangdong Zhonggong Project Management Co.,Ltd.,Guangzhou 510670,China)

 

Abstract: Due to the construction process of tunnel undercrossing buildings is relatively complex, most of the traditional building construction deformation early warning systems are based on 2D geographic information systems, which often has disadvantages such as weak visualization ability and poor reliability of model prediction accuracy. Therefore, a tunnel undercrossing building construction deformation prediction algorithm based on improved BIM is proposed. By analyzing the settlement deformation of the building during construction, the deformation vector of the building construction node is obtained, the 3D geological BIM model is built, and the deformation vector of the building node is input into the 3D geological BIM model. By superimposing the dynamic volumetric grid 3D space field data on the 3D BIM geological model, the data is not only expressed in ascending dimensions, but also solves the shortcomings of the weak real-time and collaborative expression of the traditional static BIM geological model, Complete the prediction of the construction deformation of the tunnel undercrossing buildings. The experimental results show that the proposed method can accurately predict the bending deformation of the building wall under the tunnel, and has high prediction accuracy.

Keywords: improve the BIM model; tunnel underpass buildings; deformation prediction

作者简介：史俊沛（1984—），男，本科，高级工程师，主要研究方向：房屋建筑工程。

收稿日期：2023-11-15