Remote Monitoring of a Stressed Timber Bridge Deck

by Vincent Caccese, Univ of Maine, Orono, United States,
Habib Dagher, Univ of Maine, Orono, United States,
Kendrick Light, Univ of Maine, Orono, United States,

Document Type: Proceeding Paper

Part of: Structural Engineering in Natural Hazards Mitigation


The long term behavior of a CCA treated stressed timber deck bridge is being monitored, at present, using a remote data acquisition system. The bridge which is located in Gray, Maine was constructed in Fall 1991. This paper briefly summarizes details of the design details, of the remote data acquisition, and of a series of static and dynamic load tests. The static and dynamic tests were accomplished using two fully loaded trucks. Measurements of displacement, acceleration, and post-tensioning rod forces were taken. In the long term, forces in the post-tensioning rods, temperature profiles, and moisture content are being studied. The long term sensor data can be transmitted from the bridge site to a host computer over the telephone lines.

Subject Headings: Bridge decks | Wood bridges | Dynamic loads | Wood and wood products | Static loads | Infrastructure construction | Bridge-vehicle interaction | Load tests | Maine | United States

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