Smart Structures and Systems

  • 제17권3호
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  • Pages.523-539
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  • 2016
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  • 1738-1584(pISSN)
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  • 1738-1991(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

DOI QR Code

Optimal reduction from an initial sensor deployment along the deck of a cable-stayed bridge

  • Casciati, F. (Department of Civil Engineering and Architecture, DICAr, University of Pavia) ;
  • Casciati, S. (Department of Civil Engineering and Architecture, DICAR, University of Catania at Siracusa) ;
  • Elia, L. (Department of Civil Engineering and Architecture, DICAr, University of Pavia) ;
  • Faravelli, L. (Department of Civil Engineering and Architecture, DICAr, University of Pavia)
  • 투고 : 2015.05.21
  • 심사 : 2016.02.11
  • 발행 : 2016.03.25
⟨ 이전 논문 다음 논문 ⟩

초록

The ambient vibration measurement is an output-data-only dynamic testing where natural excitations are represented, for instance, by winds and typhoons. The modal identification involving output-only measurements requires the use of specific modal identification techniques. This paper presents the application of a reliable method (the Stochastic Subspace Identification - SSI) implemented in a general purpose software. As a criterion toward the robustness of identified modes, a bio-inspired optimization algorithm, with a highly nonlinear objective function, is introduced in order to find the optimal deployment of a reduced number of sensors across a large civil engineering structure for the validation of its modal identification. The Ting Kau Bridge (TKB), one of the longest cable-stayed bridges situated in Hong Kong, is chosen as a case study. The results show that the proposed method catches eigenvalues and eigenvectors even for a reduced number of sensors, without any significant loss of accuracy.

키워드

참고문헌

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피인용 문헌

  1. Human induced vibration vs. cable-stay footbridge deterioration vol.18, pp.1, 2016, https://doi.org/10.12989/sss.2016.18.1.017
  2. Damage localization in a cable-stayed bridge via bio-inspired metaheuristic tools vol.24, pp.5, 2017, https://doi.org/10.1002/stc.1922
  3. Improving the dynamic performance of base-isolated structures via tuned mass damper and inerter devices: A comparative study vol.25, pp.10, 2018, https://doi.org/10.1002/stc.2234
  4. Dynamic Property Evaluation of a Long-Span Cable-Stayed Bridge (Sutong Bridge) by a Bayesian Method pp.1793-6764, 2018, https://doi.org/10.1142/S0219455419400108
  5. Optimization of cable-stayed bridges: A literature survey vol.149, pp.None, 2016, https://doi.org/10.1016/j.advengsoft.2020.102829