dc.contributor.author | Koo, Ki-Young | |
dc.contributor.author | Brownjohn, James | |
dc.contributor.author | List, David | |
dc.contributor.author | Cole, R | |
dc.date.accessioned | 2016-02-01T11:40:21Z | |
dc.date.issued | 2012-03-12 | |
dc.description.abstract | This paper presents experiences and lessons from the structural health monitoring practice on the Tamar Bridge in Plymouth, UK, a 335-m span suspension bridge opened in 1961. After 40 years of operations, the bridge was strengthened and widened in 2001 to meet a European Union Directive to carry heavy goods vehicles up to 40 tonnes by a process in which additional stay cables and cantilever decks were added and the composite deck was replaced with a lightweight orthotropic steel deck. At that time, a structural monitoring system comprising wind, temperature, cable tension and deck level sensors was installed to monitor the bridge behaviour during and after the upgrading. In 2006 and 2009, respectively, a dynamic response monitoring system with real-time modal parameter identification and a robotic total station were added to provide a more complete picture of the bridge behaviour, and in 2006 a one-day ambient vibration survey of the bridge was carried out to characterize low-frequency vibration modes of the suspended structure. Practical aspects of the instrumentation, data processing and data management are discussed, and some key response observations are presented. The bridge is a surprisingly complex structure with a number of inter-linked load-response mechanisms evident, all of which have to be characterized as part of a long-term structural health monitoring exercise. Structural temperature leading to thermal expansion of the deck, main cables and additional stays is a major factor on global deformation, whereas vehicle loading and wind are usually secondary factors. Dynamic response levels and modal parameters show apparently complex relationships among themselves and with the quasi-static load and response. As well as the challenges of fusing and managing data from three distinct but parallel monitoring systems, there is a significant challenge in interpreting the load and response data firstly to diagnose the normal service behaviour and secondly to identify performance anomalies. Copyright © 2012 John Wiley & Sons, Ltd. Copyright © 2012 John Wiley & Sons, Ltd. | en_GB |
dc.identifier.citation | Structural Control and Health Monitoring, 2013, Vol. 20, Issue 4, pp. 609 - 625 | en_GB |
dc.identifier.doi | 10.1002/stc.1481 | |
dc.identifier.uri | http://hdl.handle.net/10871/19466 | |
dc.language.iso | en | en_GB |
dc.publisher | Wiley | en_GB |
dc.relation.url | http://onlinelibrary.wiley.com/doi/10.1002/stc.1481/abstract | en_GB |
dc.rights | Copyright © 2012 John Wiley & Sons, Ltd. | en_GB |
dc.subject | environmental effects | en_GB |
dc.subject | structural health monitoring | en_GB |
dc.subject | suspension bridges | en_GB |
dc.title | Structural health monitoring of the Tamar suspension bridge | en_GB |
dc.type | Article | en_GB |
dc.date.available | 2016-02-01T11:40:21Z | |
dc.identifier.issn | 1545-2255 | |
dc.description | This is the peer reviewed version of the article, which has been published in final form at DOI 10.1002/stc.1481. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving. | en_GB |
dc.identifier.journal | Structural Control and Health Monitoring | en_GB |