使用北斗网络RTK(real-time kinematic,实时动态)技术、三维激光扫描技术,获取已建地下空间CGCS2000坐标系下的点云数据,运用3DMAX、Revit软件参考点云逆向建模,采集模型中的距离和坐标数据与地下空间实测数据进行比较,计算模型内部精度.实验结果表明:在多种新技术的融合应用下,可实现已建地下多场地使用统一坐标系建模,满足CIM(city information mode,城市信息模型)平台建设的需求.
Research on Reverse Modeling Method for Urban Underground Space:Taking the Basement of a University in Zhejiang as an Example
This article uses network real-time kinematic(RTK)technology with BeiDou and 3D laser scanning technology to obtain point cloud data under the CGCS2000 coordinate system in the established underground space.It uses 3DMAX and Revit software as reference to carry out point cloud reverse modeling,collecting the distance and coordinate data in the model and comparing them with the actual surveyed data of the underground space to calculate the internal accuracy of the model.The experimental results show that with the integration of various advanced technologies,we can use a unified coordinate system for modeling in the established underground multiple spaces and meet the requirements of city information mode(CIM)platform construction.
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