2025 Volume 6 Issue 1 Pages 349-356
During maintenance work on steel bridges, new members are added to or replaced with existing members for repair and reinforcement. By measuring three-dimensional point clouds, it is possible to grasp the shape and dimensions of existing members in detail. However, it takes time to create a three-dimensional model from point clouds, and automatic processing is required to improve efficiency. Furthermore, although existing high-strength bolt holes are often used when replacing parts, there is no established program to automatically extract the center position of high-strength bolts. In this study, we examined the algorithm for searching the center position of high-strength bolts from point clouds and the parameters for the types of high-strength bolts, and demonstrated that the search can be performed with the accuracy required for joining steel bridge members.