Applying BIM+GIS to the visualized management of...
BIM can fully reflect the important information of building design,site,construction and post-management.Nevertheless,it can't reflect the precise site information and environmental information around the building.GIS can fully reflect the geographic information around the building.The data sources of GIS are mainly map data,ground survey data,digital data and text reports.By combining BIM with GIS,this study established the model which can present the macro-geographic information and structural information about the tunnel.
Firstly,in this study the BIM models of the existing underpass tunnels in Chengdu were established through the completed drawings provided by Chengdu Water Authority.By using the BIM models,the initial state of the just completed tunnel can be reflected accurately.
Secondly,the high-precision topographic data of the area where Tianfu underpass tunnel in Chengdu located by GIS software were obtained.Then using LocaSpace Viewer software to attach the surrounding street scenery to the terrain data generated by InfraWorks,and the street scenery model of Tianfu underpass tunnel was generated.At last,FBX files which collect GIS information and BIM information in InfraWorks software are linked to Navisworks platform for managers to realize cloud roaming(Figure 1).
Figure 1 Underpass tunnel and its surrounding layout
This study explored the methods of parameterization,informatization,visualization and composite design of urban underground space(Figure 2).It can be used to solve the following problems.
(1)The post-designed municipal engineering planning can accurately find the existence underground space from the cloud management platform and then avoid collide the built underground engineering.
(2)Managers can rationally distribute the underground water grid,and effectively manage the complicated water grid with space arrangement in cloud management[1].
(3)Using the information storage function of BIM,the design data of urban underground space can be stored more reasonably,clearly and conveniently,and the real parameterized city and intelligent city can be achieved.
Figure 2 Visualization of urban underground space