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The first pedestrian cable stayed bridge using ultra-high performance concrete (UHPC) has been designed and constructed in Korea. Our research team want to verify the practicability and feasibility of cable stayed UHPC highway bridges by means of the actual erection of a pedestrian cable stayed UHPC bridge as a test bed. According to the analysis and the preliminary vibration test of the pedestrian cable stayed UHPC bridge constructed, the results indicated that satisfactory serviceability in terms of vibration was secured for most of the pedestrian walking load cases. However, some responses exceeding the limiting criteria occurred in the case of impacts induced by the jumping of a pedestrian. Accordingly, TMDs (Tuned Mass Dampers) were installed on the parapet of the bridge in order to reduce vibrations. The TMD performance verification test showed that the maximum acceleration response of 0.186g, measured prior to the installation of the TMDs, reduced by more than 49% after the installation of the TMDs to reach a value of 0.095g, satisfying the limiting criteria of 0.1g in Korea.

A study on the vibration control of an ultra-high performance concrete pedestrian cable stayed bridge