ABSTRACT
As the ages of bridges in Japan continue to increase, the demand for monitoring these bridges is also increasing. However, there might be some problems while conducting BSHM. Practically, collecting displacement data is much more challenging than collecting acceleration data. In terms of theoretical analysis, FE models are very complex. Both creating datasets and updating models require a significant amount of computational resources. To solve these problems, this study uses accelerometers to identify the displacement of bridges for structural integrity estimation. A scaling factor is developed to solve the problems of discrepancies between measured physical response and FEA response, and help to create a model that can reduce the computation time of updating. Finally, the damage detection is achieved by a CVAE which uses displacement data as its interface. The feasibility of the proposed method is verified through an in-house experiment.
