三维激光扫描与BIM技术融合的城市轨道交通地下建筑物三维建模方法

Based on 3D laser scanning and BIM integrated technology 3D modeling method of underground buildings in urban rail transit

本文将三维激光扫描技术与BIM技术相结合,实现了城市轨道交通地下车站、隧道及附属设施的三维建模。通过激光扫描仪获取点云数据,利用点云处理软件进行预处理,包括拼接、去噪和精简等操作;然后利用特征点云提取方法结合BIM建模软件和可视化编程技术,有效解决了传统测绘方法无法获取和处理复杂地下建筑物信息及BIM模型中信息孤岛问题。本文方法对未来城市轨道交通工程建设和运维管理的信息化和三维可视化具有重要意义。

This paper combines 3D laser scanning technology with BIM technology to realize 3D modeling of underground stations,tunnels and ancillary facilities of urban rail transit.The point cloud data is obtained by laser scanner,and the point cloud processing software is used for pre-processing,including splicing,denoising and simplifying operations.Then,the feature point cloud extraction method combined with BIM modeling software and visualization programming technology,which is used to effectively solve the problem that traditional surveying and mapping methods can not obtain and process complex underground building information and information island in BIM model.This method is of great significance for the future development of urban rail transit engineering construction and operation and makes maintenance management towards informatization and three-dimensional visualization.