An old arch bridge was subject to demolition due to life-cycle damage and environmental issues, in a central-east region of Italy. During the demolition process, several dynamic tests were executed in order to evaluate the structural behavior before and during demolition. The classical Modal Analysis methods revealed difficulty in determining the modal parameters, so these results were validated with a newly developed technique of modal parameter identification and then verified with sophisticated finite element models. The structure revealed some surprising results relatively to the dynamic characteristics before and after the partial demolition.
Structural assessment outcomes from the demolition of an arch bridge with cluster modal analysis
ISLAMI, KLEIDI;ZAMPIERI, PAOLO;
2013
Abstract
An old arch bridge was subject to demolition due to life-cycle damage and environmental issues, in a central-east region of Italy. During the demolition process, several dynamic tests were executed in order to evaluate the structural behavior before and during demolition. The classical Modal Analysis methods revealed difficulty in determining the modal parameters, so these results were validated with a newly developed technique of modal parameter identification and then verified with sophisticated finite element models. The structure revealed some surprising results relatively to the dynamic characteristics before and after the partial demolition.
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