Investigation concerning structural health monitoring of an instrumented cable-stayed bridge

J. M. Ko, Yiqing Ni, H. F. Zhou, J. Y. Wang, X. T. Zhou

Research output: Journal article publicationJournal articleAcademic researchpeer-review

49 Citations (Scopus)


In Hong Kong, a sophisticated long-term structural health monitoring system has been devised by the Highways Department of HKSAR Government to monitor the structural performance and health conditions of three cable-supported bridges. On-structure instrumentation systems for two new long-span bridges are also being implemented. The implementation of these monitoring systems highlights the necessity for developing a monitoring-based structural health evaluation paradigm for long-span bridges. This paper describes the research directed towards this that has been conducted in the Hong Kong Polytechnic University. Taking the instrumented cable-stayed Ting Kau Bridge as a paradigm, the research covers the development of an index system and a database system for monitoring data management, the modelling of the environmental variability of measured modal properties with the intention of eliminating environmental effects in vibration-based damage detection, and the feasibility of using measured modal properties from the deployed vibration sensors for structural damage identification.
Original languageEnglish
Pages (from-to)497-513
Number of pages17
JournalStructure and Infrastructure Engineering
Issue number6
Publication statusPublished - 1 Dec 2009


  • Cable-stayed bridge
  • Damage identification
  • Data management
  • Instrumentation system
  • Structural health monitoring

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Safety, Risk, Reliability and Quality
  • Geotechnical Engineering and Engineering Geology
  • Ocean Engineering
  • Mechanical Engineering


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