United States Department of Transportation
ROSA P serves as an archival repository of USDOT-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by USDOT or funded partners.
As a repository, ROSA P retains documents in their original published format to ensure public access to scientific information.
i
Precision monitoring of bridge deck curvature change during replacement.
-
2016-05-01
[PDF-3.02 MB]
Details:
-
Creators:
-
Corporate Creators:
-
Corporate Contributors:
-
Subject/TRT Terms:
-
Publication/ Report Number:
-
Resource Type:
-
Geographical Coverage:
-
Edition:Final report
-
Corporate Publisher:
-
Abstract:This project was focused on development and deployment of a system for monitoring vertical
displacement in bridge decks and bridge spans. The system uses high precision wireless inclinometer
sensors to monitor inclinations at various points of a bridge deck. The inclination data is fed into a
mathematical model which calculates vertical displacement. As a specific goal, this project was intended
to monitor change in vertical displacement and curvature of a bridge deck during the deck replacement
process. Wireless inclination/temperature sensors were developed and thoroughly tested in laboratory
environment. Mathematical curvature calculation methods were used to convert inclination data into
vertical displacement. Wireless precision inclination/temperature sensors were deployed on a bridge close
to Pocomoke City in Maryland, which underwent deck replacement from January until August 2015. The
sensor revealed that, temperature change could lead to z changes in inclination of bridge girders. The
changes in inclination would lead into temperature induced vertical displacement of a bridge deck. As a
result, comparing change in displacement of bridge deck before and after deck replacement is not
meaningful unless temperature effects are characterized. The study also revealed shortcoming of
surveying, being used to find change in curvature of a bridge, because unless two surveys for a bridge
deck are taken place at the same time, their results cannot be directly compared. The method based on
wireless inclinometer sensors characterizes the effect of temperature and therefore, it separates
contribution of temperature from the change in the displacement caused by deck replacement.
-
Format:
-
Funding:
-
Collection(s):
-
Main Document Checksum:
-
Download URL:
-
File Type:
