Vol. 1, No. 1, 2010

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Assessment of performance degradation in energy dissipators installed on bridge structures

Gianmario Benzoni and Carmen Amaddeo

Vol. 1 (2010), No. 1, 3–16
Abstract

A health monitoring technique for estimating the performance degradation of antiseismic devices is presented. The approach was validated through data obtained from a 3D finite element model of a bridge structure as well as through records obtained from a real bridge equipped with viscous dampers. The records from the real structure were collected during ambient vibrations as well as a seismic event. The procedure appears capable of detecting early stages of performance variation in the devices, both in terms of location and severity level. It also requires a rather limited number of sensors, typical of a basic monitoring installation. The procedure appears feasible for application to many devices commonly installed in bridges.

Keywords
bridge, dampers, damage assessment
Milestones
Received: 16 August 2010
Accepted: 30 September 2010
Published: 12 October 2010
Authors
Gianmario Benzoni
University of California San Diego
Department of Structural Engineering
9500 Gilman Drive
Mail Code 0085
La Jolla, CA 92093
United States
Carmen Amaddeo
Università Mediterranea di Reggio Calabria
Loc. Feo di Vito
I-89100 Reggio Calabria
Italy