Building information modeling (BIM), which can efficiently manage the life cycle of structures, has been increasingly applied in the construction industry. However, it is difficult to implement BIM for existing structures, due to the differences between the design and as-built conditions. Point cloud data (PCD) can be obtained through the scan-to-BIM process, which builds a model based on the current state of the structure. The scan-to-BIM process is complicated for bridge structures and consumes significant time and resources. Therefore, this study developed a system to extract bridge design parameters automatically to reduce the time and resources for the scan-to-BIM process. The proposed automatic bridge design parameter extraction is performed in three steps: (1) noise reduction, (2) 3D transformation, and (3) parameter extraction. The validation test was conducted on the Osong test track fifth bridge in Nojang-ri, Jeondong-myeon, Yeongi-gun, Chungcheongnam-do, Korea. The system developed in this study successfully extracted the design parameters of the bridge from the PCD automatically, resulting in 0.8% error rate.

中文翻译：

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扫描至BIM的自动桥梁设计参数提取

能够有效管理结构生命周期的建筑信息模型（BIM）已在建筑行业中得到越来越多的应用。但是，由于设计和竣工条件之间的差异，很难对现有结构实施BIM。点云数据（PCD）可以通过“扫描到BIM”过程获得，该过程基于结构的当前状态构建模型。从扫描到BIM的过程对于网桥结构而言很复杂，并且会消耗大量时间和资源。因此，本研究开发了一种自动提取桥梁设计参数的系统，以减少扫描到BIM过程的时间和资源。提议的自动桥梁设计参数提取过程分三个步骤进行：（1）降噪，（2）3D变换和（3）参数提取。验证测试在韩国忠清南道延吉郡延东郡延东面Nojang-ri的Osong测试跑道第五桥上进行。本研究开发的系统成功地从PCD中自动提取了桥梁的设计参数，错误率达0.8％。