BIM based structural state visualization system for highway tunnels
In the process of highway tunnel construction and operation,in order to grasp the change law of tunnel structure,the deformation of tunnel structure is usually analyzed by monitoring the settlement,deformation and force of tunnel structure,and the change trend of tunnel structure is predicted.In the above data analysis process,the collected data is usually imported offline into Excel,Origin and other software for analysis,and displays the results in charts and tables.Aiming at its many deficiencies,such as timeliness hysteresis in data analysis,inefficient utilization,great difficulty in results acquisition,etc.,BIM technology was combined with tunnel monitoring and measurement information,a structural state visualization system for highway tunnels was designed and developed.The division of tunnel engineering components by the civil structure of highway tunnels and related specifications was studied,and the classification method of tunnel model components was proposed.On this basis,the tunnel BIM model was constructed,and the coding method of tunnel components and structural condition monitoring sensors were designed.Referring to the research on the stability determination of existing tunnels,a structural state classification method based on tunnel structural state coefficients was proposed,and a visual mapping scheme and associated BIM method for structural state data were designed.Based on the tunnel three-dimensional space model,tunnel structural information,monitoring measurement database,and the three-stage visualization process,the 3D visualization of the highway tunnel structural state was realized using the Unity 3D engine.The Browser/Server architecture was adopted to realize cloud management of monitoring measurement data and deployment of visualization systems on the cloud server.Relying on the Lianchengshan Highway Tunnel in the Baohan(Baoji-Hanzhong)Highway,the system functions such as 3D visualization and forward simulation of the structural state of the tunnel were verified.It provides technical support for improving the digital management level of highway tunnels throughout the whole life cycle.4 tabs,13 figs,21 refs.
tunnel engineeringdata visualizationBIMdigital managementstructural state
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NSTL
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