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Smart Structures and Systems Volume 17, Number 3, March 2016 , pages 431-444 DOI: https://doi.org/10.12989/sss.2016.17.3.431 |
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Automated identification of the modal parameters of a cable-stayed bridge: Influence of the wind conditions |
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Filipe Magalhães and Álvaro Cunha
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| Abstract | ||
| This paper was written in the context of a benchmark study promoted by The Hong Kong Polytechnic University using data samples collected in an instrumented cable-stayed bridge. The main goal of the benchmark test was to study the identification of the bridge modes of vibration under different wind conditions. In this contribution, the tools developed at ViBest/FEUP for automated data processing of setups collected by dynamic monitoring systems are presented and applied to the data made available in the context of the benchmark study. The applied tools are based on parametric output only modal identification methods combined with clustering algorithms. The obtained results demonstrate that the proposed algorithms succeeded to automatically identify the modes with relevant contribution for the bridge response under different wind conditions. | ||
| Key Words | ||
| automated operational modal analysis; cable-stayed bridge; benchmark study | ||
| Address | ||
| Filipe Magalhães and Álvaro Cunha: CONSTRUCT – ViBest, Faculty of Engineering, University of Porto (FEUP), Rua Dr. Roberto Frias, 4200-465 Porto, Portugal | ||