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Cross-Verification of as-built Point Cloud and GIS-Related Map Data

Open Journal of Civil Engineering 2013年第4期3卷 219-227页

作者： Naai-Jung Shih Shih-Cheng Tzen Tzu-Ying Chan Chia-Yu Lee Department of Architecture National Taiwan University of Science and Technology Taipei Taiwan

This study cross-validates existing urban maps using point cloud models to update GIS related data. The model, as-built 3D data, is created to integrate with maps in an architectural CAD platform. The clouds are referred by existing vector maps to verify inconsistency and to update 3D spatial relationships between subjects and environment. The cloud model shows its top reference hierarchy as the updated data for topographic-derived urban maps.

关键词： 3D Scan as-built 3D Models Urban Infrastructure GIS Topographic Data

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The Integrated 3D as-built Representation of Underground MRT Construction Sites

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Journal of Building Construction and Planning Research 2013年第4期1卷 153-162页

作者： Naai-Jung Shih Chia-Yu Lee Tzu-Ying Chan Shih-Cheng Tzen Department of Architecture National Taiwan University of Science and Technology Taipei Taiwan China.

This study facilitates the scalability of as-built data from an earlier street level to underground transportation sites from the life-cycle perspective of urban information maintenance. as-built 3D scans of a 6 km street were made at different time periods, and of 3 underground Mass Rapid Transit (MRT) stations under construction in Taipei. A scanned point cloud was used to create a Building Information Modeling (BIM) Level of Development (LOD) 500 as-built point cloud model, with which topographic utility data were integrated and the model quality was investigated. The complex underground models of the transportation stations are proofed to be in correct relative locations to the street entrances on ground level. In the future the 3D relationship around the station will facilitate new designs or excavations in the neighborhood urban environment.

关键词： Point Cloud 3D Scans as-built Model Building Information Modeling (BIM) Level of Development (LOD) Mass Rapid Transit (MRT)

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