Finite Element Model Updating and Nonlinear Dynamic Analysis of French Creek Bridge Based on Ambient Vibration Testing

Abstract eng:
Built in 1993, the French Creek Bridge is located near Parksville on Vancouver Island, British Columbia (BC), Canada. The bridge is part of the British Columbia Smart Infrastructure Monitoring System (BCSIMS), which is a real-time seismic monitoring program for bridges in BC. An ambient vibration test was conducted on the bridge in 2014 in order both to calculate the operational dynamic characteristics of the bridge and calibrate/update the finite element model of the bridge. The updated finite element of the bridge is then used to perform linear and nonlinear time history analysis, and push over analysis. Results obtained are used to determine the performance levels of the bridge in accordance with the Canadian Highway Bridge Design Code 2015. Results show that no primary members are expected to be damaged, and that the bridge will maintain repairable and operational during major earthquake.

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