Abstract

The objectives of this study are to pre-test analyze a decommissioned RC bridge that is selected in consultation with New York State Department of Transportation (NYSDOT), and design and plan the field tests of the bridge for the performance qualification and validation of distributed crack sensors and a fast Electrical Time Domain Reflectometry (ETDR) instrument to their full potential. The scope of work includes: (a) Selection of a decommissioned bridge, (b) Pre-test analysis of the select bridge structure to evaluate its progressive damage and determine the locations for sensor deployment, (c) Design and planning of field tests of the select bridge, (d) Field instrumentation with coaxial cable and fiber optical sensors for performance comparison, and (d) Summary of the findings of this study. Once fully validated and demonstrated in field conditions, distributed crack sensors and sensing instruments are expected to play a significant role in routine inspections and bridge ratings and in the rapid assessment of structural conditions for post-event evaluations and responses, improving the safety and security of transportation infrastructure at the height of a crisis. These roles are due primarily to their unique ability of permanently recording the widest crack a RC member experienced during a recent event. Such an attribute ensures the availability of damage data even if a fast ETDR system experiences malfunction during the event, greatly improving the reliability of bridge inspections.

Department(s)

Civil, Architectural and Environmental Engineering

Sponsor(s)

NYS Energy Research and Development Authority

Comments

NYS Energy Research and Development Authority Contract No. 9820

Keywords and Phrases

Power substation; finite element model; modal analysis; response spectrum analysis; time history analysis; shake table test

Report Number

C-06-34

Document Type

Report - Technical

Document Version

Final Version

File Type

text

Language(s)

English

Rights

© 2009 Center for Transportation Infrastructure and Safety, Missouri University of Science and Technology, All rights reserved.

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