Digital Twin-Based Platform Framework for Metro Bridge and Tunnel Structure Service

: With the rapid development of metro networks in major cities in China, the challenges and bottlenecks faced by the operation and maintenance management of metro bridge and tunnel structures have become increasingly significant. In order to improve the structural safety of metro bridges and tunnels in operation, a digital twin-based platform framework for metro bridge and tunnel structure service was proposed. First, the application requirements of digital twins in the operation and maintenance of metro bridge and tunnel structures were analyzed. Then, the digital twin model structure, operation mechanism and platform architecture design were proposed based on those requirements. Finally, the functional application of digital twins for operations and maintenances of metro bridges and tunnels were elaborated, which would provide a new technical support program for operation and maintenance management of urban rail transportation facilities and structures.