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FOURTH NATIONAL WORKSHOP ON BRIDGE RESEARCH IN PROGRESS:
 
RESEARCH ABSTRACT
 
Title:
Nondestructive Testing of Bridges
Author(s) and Affiliation(s):
Vijay Saraf, Andrzej S. Nowak and Sangjin Kim University of Michigan, Ann Arbor, MI
Principal Investigator:
Andrzej S. Nowak
Sponsor(s):
Michigan Department of Transportation and the National Science Foundation
Research Start Date:
June 1, 1995
Expected Completion Date:
August 31, 1996
Research Objectives:
The objective of this study is to develop an integrated field testing procedure for evaluation of bridges. It is often observed during load testing of a bridge that the actual load capacity is higher than that obtained from analytical methods. In certain cases, this extra safety reserve can be utilized to avoid rehabilitation by using nondestructive testing. Moreover, thorough evaluation of the bridge condition also requires the knowledge of actual traffic load and its distribution to different bridge components. Therefore, testing procedures will be developed to determine the bridge load capacity, the actual live load distribution and the fatigue load spectra.
Expected Products or Deliverables:
The proposed procedure for proof load testing was found to be a fast, efficient and economical way to verify the load capacity. The results from weigh-in-motion measurements can be utilized to update the live load models for bridge design specifications. The experimental procedures can be combined together to develop an automated bridge monitoring and management system.

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