Instrumentation and health monitoring of cable-supported bridges

Structural health monitoring (SHM) is a relatively new paradigm for civil infrastructure stakeholders including operators, consultants and contractors which has in the last two decades witnessed an acceleration of academic and applied research in related areas such as sensing technology, system identification, data mining and condition assessment.SHM has a wide range of applications including, but not limited to, diagnostic and prognostic capabilities.However when it comes to practical applications, stakeholders usually need answers to basic and pragmatic questions about in-service performance, maintenance and management of a structure which the technological advances are slow to address.

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“…Also provided check on in-wind performance and validation of wind tunnel predictions. (Wong, 2004) 27 Westend Bridge…”

Section: Suspension Bridgementioning

confidence: 99%

Vibration-based monitoring of civil infrastructure: challenges and successes

Brownjohn

Stefano

et al. 2011

J Civil Struct Health Monit

273

132

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“…Whereas, 64 cables are employed to strengthen the three towers in the lateral direction (Ni et al 2015). Within a long-term structural health monitoring system conceived by the Hong Kong SAR Government Highways Department, during the construction of the bridge and also after its completion in 1999 (Wong 2004;Ko and Ni 2005), more than 230 sensors have been placed on the TKB. On the bridge, accelerometers, anemometers, strain gauges, temperature sensors, GPS, and weigh-in-motion sensors are deployed (Wong 2007;Ni et al 2011).…”

Section: Figure 2 General Layout Of the Ting Kau Bridgementioning

confidence: 99%

Tension estimates in cable stayed bridges

Casciati¹,

Casciati²,

Elia³

et al. 2015

Proceedings of the Second International Conference on Performance-Based and Life-Cycle Structural Engineering (PLSE 2015)

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“…In the past decade, five long-span cable-supported bridges, namely the Tsing Ma Bridge, the Kap Shui Mun Bridge, the Ting Kau Bridge, the Western Corridor Bridge, and the Stonecutters Bridge, have been built in Hong Kong. All five bridges have been instrumented with a sophisticated on-line SHM system, named "Wind And Structural Health Monitoring System (WASHMS)" (Wong 2004(Wong , 2007. The WASHMS has also been periodically updated in order to effectively execute the functions of structural condition monitoring under inservice condition and structural degradation evaluation as it occurs.…”

Section: Health Checks Through Landmark Bridges To Sky-high Structuresmentioning

confidence: 99%

Health Checks through Landmark Bridges to Sky-High Structures

Wong²,

Xia

2011

Advances in Structural Engineering

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Massive infrastructure projects developed in Hong Kong make for big challenges and unique opportunities for engineers and researchers. The construction of the cables-stayed Stonecutters Bridge sets up a new landmark in the bridge engineering community, with its main span exceeding 1,000 m as well as its sophisticated instrumentation system comprising more than 1,500 sensors. The development of structural health monitoring (SHM) technology has evolved for over 10 years in Hong Kong since the implementation of the so-called “Wind And Structural Health Monitoring System (WASHMS)” on the suspension Tsing Ma Bridge in 1997. The successful engineering paradigms of implementing and operating SHM systems for five cable-supported bridges and experiences gained by practice and research in the past decade have promoted the applications of this technology beyond Hong Kong and extending from long-span bridges to high-rise structures. In this paper, the evolution in the design methodology for SHM systems, the advancement in several aspects of SHM technology, and a performance comparison between the early implemented and lately developed SHM systems for large-scale bridges are first outlined. Subsequently, the concept of the so-called “life-cycle structural health monitoring (LSHM)” is addressed by exploring the integration of in-construction monitoring and in-service monitoring and by realizing such an integrated system to a super-tall tower structure. The issue on how an SHM system benefits structural vibration control is also discussed.

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Instrumentation and health monitoring of cable-supported bridges

Cited by 277 publications

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Vibration-based monitoring of civil infrastructure: challenges and successes

Vibration-based monitoring of civil infrastructure: challenges and successes

Tension estimates in cable stayed bridges

Health Checks through Landmark Bridges to Sky-High Structures

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