## 4 Case Study
### Multi-Scale Information Collaborative Management in Xiong'an New District
#### 4.1.2 Meso-Macro Information Collaborative Management  
* Model analysis  
In the aspect of model analysis, it is necessary to combine the model in BIM and the model in GIS with the help of a platform. According to the requirements of project model operation evaluation and localization, Xiong'an New District chooses the SuperMap platform as the model analysis platform. In order to ensure the smooth import of XDB model files into the platform, it needs to be analyzed deeply. The analytical method is to carry out semantic extraction, geometric information extraction, and coordinate method transformation of the model through the platform, so as to regenerate the region-level UDB model on the platform, as shown in Figure 22. Meanwhile, in order to ensure the unity of the position of the XDB model and the coordinate position of the SuperMap platform, all information models need to use a unique coordinate method. The positioning base point in the information model needs to be the coordinate value in the urban coordinate method of Xiong'an New District. The plane method adopts the 2000 national geodetic coordinate method, and the elevation method adopts the 1985 national elevation benchmark. Based on BIM and GIS technology, the space planning of group projects is incorporated into the overall planning of the regional level so as to show the macro planning thoughts of the planners more vividly and truly. * Data integration  
In terms of the data integration mentioned in the method, the Xiong'an New District uses the UDB engine (a kind of SuperMap Objects custom format file-type space data engine) to store the space data and attribute data of the new district directly into UDB data files. The space M&C data indicators of Xiong'an New District, XDB data of BIM, and UDB data of GIS are imported into the SuperMap platform. In the SuperMap platform, the BIM data of small scenes and the GIS data of large scenes are further integrated and applied. The data collection ability of GIS and the collaborative ability of BIM can accurately reflect the current situation and changes in facility data in different areas. The integrated data are extracted, calculated, and translated in the platform, so as to obtain the macroscale \begin{table}
\begin{tabular}{c c} \hline \hline
**Related Clauses** & **BIM Related Content** \\ \hline \multirow{3}{*}{Clause 7} & The BIM shall be comprehensively implemented in the bidding and \\  & tendering activities to realize the whole-life cycle management of \\  & engineering construction projects. \\  & The bidding documents shall reasonably set relevant clauses supporting \\  & technological innovation, energy conservation, and environmental \\  & protection, and clarify the application requirements of BIM. \\  & BIM shall be applied to the construction projects of Xiong’an New District \\  & in the investigation, design, and construction stages as agreed. Contract \\  & performance management shall be strengthened, and contract performance \\  & information disclosure shall be actively promoted. \\  & Combined with the application of BIM, CIM, and other technologies, the \\  & project quality insurance institutional guarantee shall be gradually \\  & implemented to replace the project supervision institutional. \\ \hline \hline \end{tabular}
\end{table} 
Table 1: BIM-related contents in “Administrative Measures for Bidding and Tendering for Construction Projects of Xiong’an New District (Trial)”. relevant M&C data of a proposed project in Xiong'an New District. An example of the M&C data results required by the government unit obtained from the Xiong'an Park Main Venue project is shown in Figure 23. Combined with the planning information of the digital city, the manager coordinates the overall planning of the region from a macro perspective. It will facilitate the implementation of the overall plan and control the detailed plan of Xiong'an New District in the planning area.