Eigenfrequency Monitoring during Bridge Erection

Full-scale tests not only can verify the numerical model of a structure, but can also serve as an independent control during erection. This was the case for a new bridge in Maribor, Slovenia, where measurements of ambient vibrations were performed throughout the entire erection. Special attention was paid to the eigenfrequency changes caused by the erection of each segment. This monitoring provided useful information to the design engineers during erection and will continue to do so in the future. The paper focuses on measurements made on the balanced cantilever with a variable depth on the left shore.