2025 Volume 6 Issue 1 Pages 217-223
With advancements in measurement technology, digital twins leveraging large-scale real-time data have garnered significant attention. In digital twins, measurement and data analysis technologies play a critical role, and GNSS (Global Navigation Satellite System), known for its high-precision positioning capabilities, is one such promising technology. This study attempted real-time 3D displacement monitoring during bridge construction using GNSS. While no significant movement was observed in the direction orthogonal to the bridge axis, displacements in the longitudinal and vertical directions were found to be interlinked. These displacements were inferred to result from both small rotation of the entire bridge, including its foundation, caused by concrete casting, and deformations contributing to vertical and longitudinal displacements. The study demonstrated the potential of continuous monitoring using GNSS for three-dimensional behavior of bridges during construction.
