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  A System for the analysis of precast tunnel segments during shield tunneling based BIM

  The paper addresses precast tunnel segments for the west line of the Hongmei South Road Tunnel to study how to monitor and record the structural behavior of precast tunnel segments. To aim this target, an intelligent system based BIM is designed and created. The system is divided into four layers. At the data capturing layer, the shield excavation information, the ground surface settlement information and the surface texture of segments are collected by a special mobile devices and wireless sensor network. All the data are connected with BIM model as a core of the information management layer, and then saved into the spatial-temporal database. The history and real-time information are visualized dynamically and interactively based on BIM model according to user’s requirement so as to seek the relationship between segment defects/damage and construction data. Information intelligent exploring layer provide some data mining tools to analyze the reason of segment defects/damage.

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