Testbed for Structural Health Monitoring of Long-Span Suspension Bridges
Publication: Journal of Bridge Engineering
Volume 17, Issue 6
Abstract
Comprehensive structural health monitoring systems have been developed and installed in several long-span suspension bridges around the world, aiming to monitor structural health conditions of the bridges in real time. Nevertheless, many key issues remain unsolved, such as how to take full advantage of the health monitoring system for effective and reliable damage detection of these complex structures. An innovative testbed was therefore established in a laboratory to allow researchers to recreate rational damage scenarios, apply different sensors and sensing networks, and test various damage detection algorithms. The design principles of the laboratory-based testbed are introduced. The paper will then outline the design and setup of a physical model for a long-span suspension bridge, which will consider various damage scenarios. Geometric measurements and modal tests were subsequently carried out to identify its geometric configuration and dynamic characteristics, respectively. The finite-element modeling of the physical bridge model was finally established using a commercial software package, which was followed by a finite-element model updating the use of the measured modal properties. This testbed, comprising of the delicate physical model and the updated finite-element model of a long-span suspension bridge, could solve a benchmark problem for the structural health monitoring of long-span suspension bridges.
Get full access to this article
View all available purchase options and get full access to this article.
Acknowledgments
We are grateful for the financial support from Hong Kong Polytechnic University through the Chair Professor Research Funding Scheme and the Niche Area Program in Performance-based Health Monitoring of Large Civil Engineering Structures. The financial support from the National Natural Science Foundation of China (Grant No. 50830203) is also acknowledged.
References
Allemang, R. J., and Brown, D. L. (1982). “A correlation coefficient for modal vector analysis.” Proc., 1st Int. Modal Analysis Conf., Union College, NY, 110-116.
ANSYS. (2004). ANSYS user's manual, revision 9.0, Swanson Analysis Systems, Houston, TX.
Brownjohn, J. M. W., Xia, P. Q., Hao, H., and Xia, Y. (2001). “Civil structure condition assessment by FE model updating: Methodology and case studies.” Finite Elem. Anal. Des., 37(10), 761–775.
Carvalho, J. B., Datta, B. N., Lin, W. W., and Wang, C. S. (2006). “Symmetry preserving eigenvalue embedding in finite-element model updating of vibrating structures.” J. Sound Vibrat., 290(3–5), 839–864.
Chang, F. K. (1997). Structural health monitoring: Current status and perspectives, CRC Press, Boca Raton, FL.
Denn, M. M. (1969). Optimization by variational methods, McGraw Hill, New York.
Doebling, S. W., Farrar, C. R., and Prime, M. B. (1998). “A summary review of vibration-based damage identification methods.” Shock Vibrat. Digest, 30(2), 91–105.
Farrar, C. R., et al. (2003). “Damage prognosis: Current status and future needs.” Rep. LA-14051-MS, Los Alamos National Laboratory, Los Alamos, NM.
Fiacco, A. V., and Mccormick, G. P. (1968). Nonlinear programming: Sequential unconstrained minimization techniques, Wiley, New York.
Glaser, S. D., Li, H., Wang, M. L., Ou, J. P., and Lynch, J. (2007). “Sensor technology innovation for the advancement of structural health monitoring: a strategic program of US-China research for the next decade.” Smart Struct. Sys., 3(2), 221–244.
Jaishi, B., and Ren, W. X. (2005). “Structural finite element model updating using ambient vibration test results.” J. Struct. Eng., 131(4), 617–628.
Johnson, E. A., Lam, H. F., Katafygiotis, L. S., and Beck, J. L. (2004). “Phase I IASC-ASCE structural health monitoring benchmark problem using simulated data.” J. Eng. Mech., 130(1), 3–15.
Mottershead, J. E., and Friswell, M. I. (1993). “Model updating in structural dynamics: A survey.” J. Sound Vibrat., 167(2), 347–375.
Mufti, A. A. (2001). Guidelines for structural health monitoring, design manual No. 2, ISIS Canada Research Network, Winnipeg, Canada.
Simiu, E., and Scanlan, R. (1996). Wind effects on structures, 3rd Ed., Wiley, New York.
Wong, K. Y., Man, K. L., and Chan, W. Y. (2001a). “Monitoring Hong Kong’s bridges real-time kinematic spans the gap.” GPS World, 12(7), 10–18.
Wong, K. Y., Man, K. L., and Chan, W. Y. (2001b). “Application of global positioning system to structural health monitoring of cable-supported bridges.” Proc., Health Monitor. Manage. Civil Infrastruct. Syst., Vol. 4337, SPIE, Bellingham, WA, 390–401.
Xu, Y. L., Ko, J. M., and Zhang, W. S. (1997). “Vibration studies of Tsing Ma suspension bridge.” J. Bridge Eng., 2(4), 149–156.
Zhang, Q. W., Chang, C. C., and Chang, T. Y. P. (2000). “Finite element model updating for structures with parametric constraints.” Earthquake Eng. Struct. Dyn., 29(7), 927–944.
Information & Authors
Information
Published In
Journal of Bridge Engineering
Volume 17 • Issue 6 • November 2012
Pages: 896 - 906
Copyright
© 2012 American Society of Civil Engineers.
History
Received: Apr 29, 2011
Accepted: Nov 30, 2011
Published online: Dec 2, 2011
Published in print: Nov 1, 2012
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.