As a technique to reduce structure-borne noise of steel bridges, we propose to use piezoelectric ceramics with shunted circuits. This technique changes vibration energy of steel bridges into electric energy by the piezoelectric ceramics installed thereon, and the tuned shunted circuit changes the electric energy into thermal energy. We examined a steel plate which imitated a web panel of steel bridges and a test girder, and compared the results when vibrations were controlled and not controlled. The examination results showed an effect in vibration control and noise reduction, and indicated that the proposed technique dissipated vibration energy.

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