At IHI Infrastructure Systems, a steel bridge manufacturer, the primary application of BIM/CIM is in construction (from the start to completion). However, the data provided from the design phase cannot be read by the factory systems. To address this, we tested the effectiveness and challenges of data integration through trial projects. Traditionally, the most inefficient aspect was the actual size process, so we implemented a database for data utilization. As a result, the most significant benefit was the acceleration of the 3D model, which enabled the automation of interference checks. While the impact on reducing labor in the actual size process was minimal, key challenges were identified. Additionally, we have started utilizing BIM/CIM in maintenance management. For the maintenance of long-span bridges, we are exploring how to effectively use models and attribute information. Notably, the identification of defect locations has become significantly more efficient with the use of AR technology, making it easier to understand defect distribution. However, directly applying upstream models has proven difficult, and we are currently in the process of trial and error.
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