Mathematical Problems in Engineering
Volume 2009 (2009), Article ID 284368, 12 pages
Research Article

A Deflection-Based Bridge Diagnosis Method

1College of Computer Science, Chongqing University, Chongqing 400044, China
2Key Laboratory of Optoelectronic Technology and System of Educational Ministry of China, Chongqing University, Chongqing 400044, China

Received 9 November 2008; Revised 8 March 2009; Accepted 9 June 2009

Academic Editor: Angelo Luongo

Copyright © 2009 Xiaofan Yang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


By exploiting the “correlation of deflections” phenomena, we propose a new bridge diagnosis method. First, we introduce the notion of deflection correlation (DC) graphs and propose a method for building a DC graph. Second, we present a new algorithm for locating the abnormal cliques. Finally, we demonstrate the potential utility of the new method by applying it to the simulated diagnosis of a real-life bridge.