EXPERIMENTAL STUDY FOR IDENTIFYING STIFFNESS OF BRIDGE SLAB BY USING WAVELET TRANSFORM

摘要

In health monitoring of bridge slabs, it is suitable to identify the change in their stiffness. The authors have been proposing the method to identify the spring constant of slab by wavelet transform of an excitation force and acceleration response. In previous paper, the method to identify the spring constants of slabs is theoretically investigated under the noisy conditions. The method to find the specific values of constant a in an analyzing wavelet by which the most reliable value of the spring constant is given according to the graphic form showing the relation between identified mass and constant a. In this paper, the effectiveness of the method is proven from the experiment results using the reinforced concrete panel specimen.