DOI QR코드

DOI QR Code

A Study on the Modal Parameters for Cable System of Bridge

교량 케이블시스템의 모드변수에 관한 연구

  • 이현철 ((주)구주엔지니어링 기업부설연구소) ;
  • 조영훈 ((주)구주엔지니어링 기업부설연구소) ;
  • 김진수 ((주)구주엔지니어링 기업부설연구소) ;
  • 박경호 ((주)구주엔지니어링 토목기술부)
  • Received : 2019.05.17
  • Accepted : 2019.08.20
  • Published : 2019.09.01

Abstract

In recent years, the type of bridge where cables such as suspension bridge and cable-stayed bridge are the main factors in the construction of long-range bridges has been soaring. The effects of cables on these structures are very large, and for structural analysis, it is necessary to study the cable and the structural changes according to the mode characteristics of the cables. In particular, cables are directly connected to camber adjustment, which conveys load effects on girders to tower, and are important components in the overall structure, and since the initial tension on the construction is compared with the tension over time, this study was conducted to help identify the condition of the bridge's aging and abnormalities. Therefore, in this study, the characteristics of the mode from the mode analysis through the impact hammer to the mass of the cable and the change in the length of the cable are analyzed.

Keywords

Cable;Frequency Response Function;Stabilization Chart;Mode Complexity;Mode Assurance Criteria

Acknowledgement

Supported by : 국토교통과학기술진흥원

References

  1. Chlko, T. J., Haritos, N. and Gershkovich, V.(1996), Non-linear curve fitting for modal analysis, Environmental Software, Vol 11, 9-18. https://doi.org/10.1016/S0266-9838(96)00016-0
  2. Cornwell, P., Farrar, C. R., Doebling, S. W. and Sohn H. (1999) Environmental Variability of Modal Properties, Experimental Techniques, Vol. 23, 45-48.
  3. Elliott, A. S. and Richardson, M. H. (1998), Virtual Experimental Modal Analysis(VEMA), Proceeding of 16th IMAC.
  4. Jenny Lau, Jeroen Lanslots, Bart Peeters, Herman Van der Auweraer. (2007), Automatic modal analysis: reality or myths.
  5. Jeong-In Shin. (2016), Damage Detection In Braced Steel Frame using Modal Analysis.
  6. Jun-Kyu Choi. (1998), Measurement of Cable Tension Force by Vibration Method.
  7. Min-Gyu Hwang. (2009), The Evaluation of Structural Performence of Braced Plate Girder Using Experimental Modal Analysis.
  8. Shwarz, B. and Richardson, M. (2001), Modal Parameter estimation from ambient response data, Proceeding of 19th IMAC.
  9. ABSignal, (2012) ModalVIEW - Operating Tutorial Version R2, 1-199 (Web : www.absignal.com)