To address the issues of relying on manual maintenance and insufficient digitization in the management of highway electromechanical equipment. This paper introduces the design and development process of the highway electromechanical Digital Twin platform from the perspective of full-lifecycle asset management and digital maintenance. The platform's functions focus on equipment asset management, providing a digital solution for real-time monitoring, fault alarm and diagnosis. The platform collects electromechanical equipment data and highway elements to construct a digital twin system integrated with map services, facilitating high-performance 3D visualization for equipment management. The system has designed a series of core modules to enhance platform performance, including scenario rapid construction, equipment layout schemes simulation, and equipment spatial correlation display. Through the application of a platform at the test site, the platform demonstrated the advantages of digital maintenance, boosting maintenance efficiency, and enhancing user interaction experience. The research has promoted the development of highway digitization.
In order study and determine the better traffic organization mode of double-decker highway, and make up for the lack of actual scenarios, the simulation approach is applied. Firstly, according to the basic conditions of the highway, the upper is passenger car type, the lower is passenger and freight mixing type, and the upper and lower are passenger and freight mixing type are selected. The harmonic average speed and time to collision (TTC) are selected as the efficiency and safety indicators, and give the detailed calculation formula. What’s more, combined with the actual road structure and parameters, the simulation model is built by using the simulation of urban mobility (SUMO) software, and set the parameters. Finally, each traffic organization mode is simulated, and collected the corresponding data to compute the indexes. Conclusions can be drawn through analysis, although there are some shortcomings in the traffic organization mode 1, it has advantages in traffic efficiency and traffic flow stability.
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