<p style="text-align: justify">Thaw settlement is one of the common threats for safe operation of buried pipelines in permafrost zone. At present, in engineering practice, multi-source monitoring and detection data such as the pipe strain are mostly discrete, the distribution of stress and strain along the pipeline and the safety status of dangerous locations are unknown. Therefore, it is of great significance to establish the pipe digital twin in geologic hazard regions to predict the structural safety state of the pipeline in real time. In this paper, finite element method was adopted to establish a parameterized numerical simulation model of pipeline to clarify the variable parameters affecting the distribution of stress and strain along the pipeline, and then a data-driven intelligent pipeline stress-strain calculation method is proposed. Based on the particle swarm optimization algorithm , the model calculation results coincide with the monitoring values, then the digital twin of the pipeline structure in the geological disaster section is formed. Finally, one crude oil pipeline made by X65 line pipe steel in northeast China was adopted as a prototype for the investigation, based on the above methods the structure digital twin of the pipeline was established , and the exact inversion and prediction of stress and strain along the pipeline were realized.</p>

Digital Twin of Buried Oil Pipe in Permafrost Regions: A Multi-Source Monitoring and Numerical Simulation Model

Paper Proceedings: https://asmedigitalcollection.asme.org/PVP/PVP2021/volume/85314

ASME 2021 Pressure Vessels & Piping Conference (PVP2021)

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