Dynamic Testing Procedures for Highway Bridges Using Traffic Loads

摘要: Dynamic bridge testing techniques used at the University of Sherbrooke on a series highway bridges in province Quebec, Canada, are presented. These procedures were developed to obtain reliable evaluation dynamic amplification factor for existing bridges, as part an ongoing rehabilitation program province's road network. Vertical acceleration responses obtained under normal or controlled traffic using different test vehicles and loading patterns. The vibration frequencies mode shapes calculated from frequency analysis measured data, calibrate finite-element models each structure. experimental methods data-processing described. need establish standard is discussed some recommendations Examples results comparisons with eigenvalue analyses given three bridges.