A Decoupled Algorithm for Cable Parameter Identification by Frequency-Ratio-Offset

In this paper, the authors propose a parameter identification algorithm for bridge cables, based on frequency-ratio-offset (FRO). By introducing specific time and space scaling factors, the dynamic equation is non-dimensionalized and expressed in a very concise form, independent of all distributed cable parameters. The frequency equation has therefore just 2 variables, which can be easily solved to obtain the universal dimensionless frequency-length curve under specific boundary conditions. The authors construct a decoupled identification algorithm based on these curves, using the FRO to compare the dimensionless beam to its real-life version. Using a pair of measured frequencies, the algorithm enables simultaneous determination of any 2 of the 3 cable parameters. Laboratory tests and real-life applications show the algorithm’s accuracy and effectiveness. On the basis of statistical analysis of dozens of predicted and measured frequencies, the authors suggest a guideline for frequency selection, and discuss the effect of measurement error on the identification results. The proposed algorithm could be an effective tool for efficient identification of multiple parameters in a wide range of bridge cables.

• Record URL:
  • http://dx.doi.org/10.1111/mice.12980
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/10939687
• Authors:
  • Sun, Ceshi
  • Zheng, Gang
  • Zhang, Xiaodong
  • Cai, Wenxiu
  • Gao, Wenjun
  • Chen, Peng
  • Zhou, Xuekun
• Publication Date: 2023-9-15

Language

• English

Media Info

• Media Type: Web
• Pagination: pp 1998-2012
• Serial:
  • Computer-Aided Civil and Infrastructure Engineering
  • Volume: 38
  • Issue Number: 14
  • Publisher: Blackwell Publishing
  • ISSN: 1093-9687
  • Serial URL: http://onlinelibrary.wiley.com/journal/10.1111/(ISSN)1467-8667

Subject/Index Terms

• TRT Terms: Algorithms; Bridge cables; Dimensionless parameters; Resonance frequency
• Subject Areas: Bridges and other structures; Highways; Maintenance and Preservation;

Filing Info

• Accession Number: 01895918
• Record Type: Publication
• Files: TRIS
• Created Date: Oct 12 2023 9:36AM