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  Digitization and Application Research of the Shield Tunnel lifecycle Information

  During the construction and maintenance of shield tunnels, different people need to investigate and research tunnel data in all perspectives and processes. First, on the basis of analyzing the shield tunnel data standardization and digitization, this paper proposes a shield tunnel lifecycle data model, which is extensible and basically covers all kinds of tunnel lifecycle data. Second, according to this data model, an Internet-based shield tunnel data repository is built, which preliminarily implements data imputing, querying and maintaining. The data are stored in XML format for platform- independent operations to enable multi-angle data exchange and sharing. Finally, application development is researched and discussed on the data repository, including data representation, visualization and automatic shield tunnel maintenance, and this paper additionally provides several directions of further research.

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