Dynamic Response Analysis of the Dominion Road Bridge Test Data

摘要

The three-dimensional dynamic response of an existing highway overpass is analyzed and compared with a computer model of the bridge. Well-defined lateral, vertical, and torsional modes of vibration are identified and presented. A computer-implemented bridge response model is fit to the experimental frequencies and mode shapes using a system identification procedure. The final model agreed well with the measured response; it also accurately predicted responses not included in the system identification procedure. The work is based on data collected from the full scale bridge test of the Dominion Road Overpass, a ten-span, reinforced concrete box girder bridge which follows a 70 degree curve along half of its length, located in Auckland, New Zealand.