I carried out experimental studies in collaboration with a research group at Kyoto University, in an attempt to validate a newly developed bridge condition assessment methodology. The test is performed at the Structures Laboratory on a 5.6 metre long simply supported bridge structure at Kyoto University. Figure 1 shows the test structure.
Figure 1. Test Structure
The test structure is stiffened at various locations by attaching steel plates on the girder flanges and response of the structure to a moving 4-axle vehicle is measured using QA-750 uniaxial accelerometers. Subsequently, developed bridge condition assessment algorithm is applied to validate the robustness of the methodology.
Figure 2. Four-axle vehicle model
Figure 3. Inclinometer attached at the support location
Figure 4. Stiffening plate attached at midspan location
The results obtained from the study prove that the developed methodology successfully identifies stiffening locations and it is a promising tool for real bridge condition assessment applications. As a future work, it is planned to validate the procedure on a full-scale railway bridge structure.
View from Nijo Castle