| Title |
3D Modeling for Displacement Measurement to Bridges-Attached Pipe and Behavioral Analysis Based on Time-Series Changes |
| Authors |
유용신(Yoo, Yong-Shin) ; 김우석(Kim, Woo-Seok) |
| DOI |
https://doi.org/10.12652/Ksce.2025.45.2.0131 |
| Keywords |
상수도; 교량첨가관; 드론; LiDAR; 3D Modeling; 변위계측; 거동분석 Waterworks; Bridges-attached pipe; Drone; LiDAR; 3D Modeling; Displacement measurement; Behavioral analysis |
| Abstract |
Water supply pipelines are typically buried underground, but additional pipelines in the form of bridge-hanging pipes exist to accommodate construction feasibility and site conditions. Externally exposed bridges-attached pipes are subject to significant damage if they are compromised, so regular maintenance is necessary. But inspection of Pipelines attached to bridges is making it practically infeasible to conduct regular checks because of accessibility issues. This study analyzes the displacement and behavioral characteristics to bridges-attached pipe by utilizing drones and LiDAR technology, by minimizing the need for inspector access. When building 3D modeling using drones, It is difficult to obtain data when scanning objects due to environmental factors and the precision of the 3D modeling decreases. To compensate for this, a LiDAR device is added to the drone to improve data quality, which is then processed and analyzed
to create a 3D digital visualization. The errors were verified through periodic surveys, and the displacement and behavior (contraction and expansion ) of bridges-attached pipes from the support frame were examined according to seasonal changes (summer to winter). Additionally, a root cause analysis was conducted for improper movements (detachment). Also, it analyzes the causes of improper movements (detachment) and proposes maintenance through repairs. |