Buy article PDF
The purchased file will be sent to you
via email after the payment is completed.
US$ 35
|
Smart Structures and Systems Volume 17, Number 3, March 2016 , pages 491-522 DOI: https://doi.org/10.12989/sss.2016.17.3.491 |
|
|
|
Wind and traffic-induced variation of dynamic characteristics of a cable-stayed bridge – benchmark study |
||
Jae-Hyung Park, Thanh-Canh Huynh, Kwang-Suk Lee and Jeong-Tae Kim
|
||
| Abstract | ||
| A benchmark problem for modal identification of a cable-stayed bridge was proposed by a research team at Hong Kong Polytechnic University. By taking an instrumented cable-stayed bridge as a test bed, nineteen sets of vibration records with known/unknown excitations were provided to invited researchers. In this paper, the vibration responses of the bridge under a series of excitation conditions are examined to estimate the wind and traffic-induced variations of its dynamic characteristics. Firstly, two output-only experimental modal identification methods are selected. Secondly, the bridge and its monitoring system are described and the nineteen sets of vibration records are analyzed in time-domain and frequency-domain. Excitations sources of blind datasets are predicted based on the analysis of excitation conditions of known datasets. Thirdly, modal parameters are extracted by using the two selected output-only modal identification methods. The identified modal parameters are examined with respect to at least two different conditions such as traffic- and typhoon-induced loadings. Finally, the typhoon-induced effects on dynamic characteristics of the bridge are estimated by analyzing the relationship between the wind velocity and the modal parameters. | ||
| Key Words | ||
| cable-stayed bridge; experimental modal analysis; typhoon-induced; traffic-induced; dynamic characteristics | ||
| Address | ||
| Jae-Hyung Park, Thanh-Canh Huynh, Kwang-Suk Lee and Jeong-Tae Kim: Department of Ocean Eng., Pukyong National University, Busan, Korea | ||