This study suggests the criteria for assessing the dynamic serviceability of bridges, The suggested criteria Is principally based on the tolerance curve of Reiher-Meister and is derived by considering the various other tolerance curves and allowable m...
This study suggests the criteria for assessing the dynamic serviceability of bridges, The suggested criteria Is principally based on the tolerance curve of Reiher-Meister and is derived by considering the various other tolerance curves and allowable maximum static deflection in various bridge specifications. The assessing quantity is the amplitude of dynamic displacement of bridge which is obtained by test vehicles. Based on the studios mentioned above and applying the curve of Reiher-Meister to the real bridge response, we divide the bridges into two types and accordingly suggest the tolerance level for each type of bridge in Reiher-Meister curve. That is, for the bridges of significant or moderate pedestrian use, zone B of Reiher-Meister curve is the threshold of allowable vibration level. For the bridges without pedestrian or highway bridges, middle line of zone A and B is the threshold of allowable vibration level. Also whole procedures from in-situ experiment to assessing the dynamic serviceability are proposed in order to be more applicable method and to pursue the consistency and objectivity. Tolerance levels for acceleration are also proposed by transforming the displacement chart of Reiher-Moister. In this transformation we used the characteristics of harmonic vibration. Proposed tolerance levels for acceleration was applied to real bridge. The result shows the good agreement in tolerance level with the displacement criteria of Reiher-Meister In spite of the rational results of this study in the real bridge, to expand the dynamic serviceability criteria proposed in this study, there must be further studies about using ambient vibration signal and assessing the serviceability of passengers in vehicles, not on the bridge.