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Structural health monitoring of bridges in the State of Connecticut

Chengyin Liu1,2, Joshua Olund2, Alan Cardini2,3, Paul D’Attilio4, Eric Feldblum4 and John DeWolf2

  1. WSP-SELLS Inc., Briarcliff Manor, NY 10510, USA
  2. Department of Civil and Environmental Engineering, University of Connecticut, 261 Glenbrook Rd, Unit 2037, Storrs, CT 06269, USA
  3. DMJM Harris, Boston, MA 02110, USA
  4. Connecticut Department of Transportation, 280 West Street, Rocky Hill, CT 06067, USA

Abstract: A joint effort between the Connecticut Department of Transportation and the University of Connecticut has been underway for more than 20 years to utilize various structural monitoring approaches to assess different bridges in Connecticut. This has been done to determine the performance of existing bridges, refine techniques needed to evaluate different bridge components, and develop approaches that can be used to provide a continuous status of a bridge’s structural integrity. This paper briefly introduces the background of these studies, with emphasis on recent research and the development of structural health monitoring concepts. This paper presents the results from three different bridge types: a post-tensioned curved concrete box girder bridge, a curved steel box-girder bridge, and a steel multi-girder bridge. The structural health monitoring approaches to be discussed have been successfully tested using field data collected during multi-year monitoring periods, and are based on vibrations, rotations and strains. The goal has been to develop cost-effective strategies to provide critical information needed to manage the State of Connecticut’s bridge infrastructure.

Keywords: structural integrity; structural health monitoring; field data; vibrations

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Copyright© 2009 IEM. Journal of Earthquake Engineering and Engineering Vibration. All Rights Reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, scanning or otherwise, except as described below, without written permission from the Publisher. Copying of articles is not permitted except for personal and internal use, to the extent permitted by national copyright law, or under the terms of a license issued by the National Reproduction Rights Organization of China.