Smart City-BIM+GIS in Urban Road and Bridge Management

17 Apr,2019

The viaduct of the Second Ring Road is the first full-viaduct expressway built in the downtown area of Chengdu City. It has a total length of more than 50 kilometers with huge amount of facilities and complex structures. Due to the unexposed information and scattered asset information, there are often difficulties in information finding, accessing, and inconsistent data display. 

In order to achieve the management requirements of the Second Ring Road, Chengdu Urban Road and Bridge Management Office decides to conduct the information management transformation of the road maintenance and mass materials to improve the accuracy of management.

The system uses CATIA computer 3D modeling software as the BIM modeling tool and SuperMap GIS 9D as the platform software to realize the BIM and GIS integration.

GIS Technological Highlights

The system reproduces the scenes through 3D real-world model, and assembles the BIM model with the 3D real-world model to maximize the simulation of the completed construction scene and provide technical support for decision-making.

Component management of the BIM model

The system sets the complete BIM model coding rules, which realizes the one-to-one correspondence between codes and components. Component coding enables rapid position location and also lays the foundation for mapping documents and architectures.

3D modeling method of “Framework + template”

The system has completed the construction of the BIM models of bridges and overpasses. During the construction stages, the system successfully solved the viaduct modeling problem by using the 3D modeling method of “framework + template”. At the same time, the system effectively builds the bridge model based on the overall layout and template of the bridge, as well as the parameterization function of CATIA. 

Due to the various piers types of the Second Ring Road Viaduct BIM model, the differences among the components, and the low repeat utilization rate of the model, the system uses PC (POWERCOPY) and UDF (User Feature Definition) to parameterize the model.

By using the "knowledge engineering" module of CATIA, the formworks of pile foundation cap, pier, drainpipe and water scorpion, support, cushion, box girder and other components of the bridge can be established. Through the template library, the standardization and unification of the model can be guaranteed, and the BIM model can be quickly built with the good quality. 

Basic map operations

Map operation function: Quickly switch maps through menus. Use the mouse to perform real-time panning, zooming in, zooming out, and full-image operations in the map window, making it easier to browse information. At the same time, the system will display the current mouse position coordinates and scale.

Layer controlling function: Due to the large amount of model data, the system adopts the flaky loading method to accelerate the loading speed of the topographic map and to improve the loading fluency and user experience. The system provides visual operations to manage the display of views.

Personnel location management

The mobile phone GPS signal is received based on the location service system interface and processed by spatial coordinate to help the position location on the electronic map. Also, the real-time position of the personnel can be displayed in the figure, the number of online users can be counted, and the historical track of the personnel can be viewed.

BIM+GIS Related Solutions

BIM+GIS Application in Life Cycle Digital Management of Yalong River Hydropower>

BIM+GIS Application in Urban Rail Transit System>

BIM+GIS Application in Qianzhangchang Railway>

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