Measurements of bridge dynamic amplification factor using bridge weigh-in-motion data

The dynamic component of bridge traffic loading is commonly taken into account with a Dynamic Amplification Factor (DAF)—the ratio between the and static load effects on bridge. In design codes, this factor generally more conservative than in reality. Recently new method calculation had been developed. Data from 15 different bridges have analysed since then paper presents results analyses. background for Bridge Weigh-in-Motion given, most recent DAF described. sites which data originated are presented, selection discussed. analyses presented discussed some examples calculations shown. considered invariably demonstrated decrease increasing axle load. This significant result, especially assessment existing structures, it beneficial to use measured structural parameters optimise analysis.