Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/11861
Title: Testbed for structural health monitoring of long-span suspension bridges
Authors: Xu, YL 
Zhang, XH
Zhan, S
Hong, XJ
Zhu, LD
Xia, Y 
Zhu, S 
Keywords: Finite-element model
Long-span suspension bridge
Modal test
Model updating
Physical bridge model
Structural health monitoring
Issue Date: 2012
Publisher: American Society of Civil Engineers
Source: Journal of bridge engineering, 2012, v. 17, no. 6, p. 896-906 How to cite?
Journal: Journal of bridge engineering 
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.
URI: http://hdl.handle.net/10397/11861
ISSN: 1084-0702
EISSN: 1943-5592
DOI: 10.1061/(ASCE)BE.1943-5592.0000349
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