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Structural Engineering and Mechanics Volume 69, Number 6, March25 2019 , pages 699-712 DOI: https://doi.org/10.12989/sem.2019.69.6.699 |
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Mitigation of the seismic response of a cable-stayed bridge with soil-structure-interaction effect using tuned mass dampers |
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Denise-Penelope N. Kontoni and Ahmed Abdelraheem Farghaly
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| Abstract | ||
| A cable-stayed bridge (CSB) is one of the most complicated structures, especially when subjected to earthquakes and taking into consideration the effect of soil-structure-interaction (SSI). A CSB of a 500 m mid-span was modeled by the SAP2000 software and was subjected to four different earthquakes. To mitigate the harmful effect of the vibration generated from each earthquake, four mitigation schemes were used and compared with the non-mitigation model to determine the effectiveness of each scheme, when applying on the SSI or fixed CSB models. For earthquake mitigation, tuned mass damper (TMD) systems and spring dampers with different placements were used to help reduce the seismic response of the CBS model. The pylons, the mid-span of the deck and the pylon-deck connections are the best TMDs and spring dampers placements to achieve an effective reduction of the earthquake response on such bridges. | ||
| Key Words | ||
| cable-stayed bridge; soil-structure-interaction (SSI); tuned mass damper (TMD); spring damper; seismic response; nonlinear analysis | ||
| Address | ||
| Denise-Penelope N. Kontoni: Department of Civil Engineering, Technological Educational Institute of Western Greece, 1 M. Alexandrou Str., Koukouli, GR-26334 Patras, Greece Ahmed Abdelraheem Farghaly: Department of Civil and Architectural Constructions, Faculty of Industrial Education, Sohag University, Sohag 82524, Egypt | ||