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Proceedings Paper

Development and implementation of a nondestructive monitoring system on a composite steel box-girder bridge in Connecticut
Author(s): Chad D. Virkler; John T. DeWolf
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Paper Abstract

The University Of Connecticut, with support and assistance from the Connecticut Department of Transportation, has been involved in the design and implementation of long-term monitoring systems on a network of bridges critical to the State of Connecticut's highway infrastructure. This paper presents a report on the development, implementation and evaluation of the monitoring of a steel box-girder bridge. The bridge is a multi-span, continuous, box girder bridge made up of two steel box-sections that are composite with the deck slab. The bridge is supported on a series of tall concrete columns, one per support. Field investigations have shown that the columns have been subject to cracks that are thought to be due to torsion. Two spans in a three-span continuous segment are currently being monitored using 8 accelerometers, 8 temperature sensors and 6 tilt meters. An extensive analysis has been conducted to evaluate the test data. There have been large temperature gradients due to both annual climate changes and due to the position of the sun with respect to the bridge. The data has also been used to develop a basis for long-term nondestructive evaluation. This is based primarily on the development of a vibration signature. The field data has also been compared with results from an extensive finite element analysis. The longterm goal of this project has been to characterize the bridge behavior and then to use this in the nondestructive evaluation of the performance over multi-year periods.

Paper Details

Date Published: 17 May 2005
PDF: 10 pages
Proc. SPIE 5765, Smart Structures and Materials 2005: Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems, (17 May 2005); doi: 10.1117/12.599904
Show Author Affiliations
Chad D. Virkler, Macchi Engineers (United States)
John T. DeWolf, Univ. of Connecticut (United States)


Published in SPIE Proceedings Vol. 5765:
Smart Structures and Materials 2005: Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems
Masayoshi Tomizuka, Editor(s)

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