Global and seismic analysis of Chacao Bridge
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Bibliographic Details
| Author(s): |
Kristin Nessa
(Dr. Ing. A. Aas-Jakobsen AS, Oslo, Norway)
Lars Halvor Kaasa (Dr. Ing. A. Aas-Jakobsen AS, Oslo, Norway) Kornelius Drange Hole (Dr. Ing. A. Aas-Jakobsen AS, Oslo, Norway) Svein Erik Jakobsen (Dr. Ing. A. Aas-Jakobsen AS, Oslo, Norway) Aymen Cheikh Mhamed (Systra, Paris, France) |
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| Medium: | conference paper | ||||
| Language(s): | English | ||||
| Conference: | IABSE Congress: Challenges in Design and Construction of an Innovative and Sustainable Built Environment, Stockholm, Sweden, 21-23 September 2016 | ||||
| Published in: | IABSE Congress Stockholm, 2016 | ||||
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| Page(s): | 999-1006 | ||||
| Total no. of pages: | 8 | ||||
| Year: | 2016 | ||||
| DOI: | 10.2749/stockholm.2016.0986 | ||||
| Abstract: |
The Chacao Bridge is an asymmetric two-main-span suspension bridge crossing the 2.5 kilometer wide Chacao Channel in Southern Chile. The bridge has main spans of 1155 m and 1055 m and a total length of 2754 m. The three concrete pylons have different heights and the Central Pylon (inverted Y-shape) is tuned to balance uneven forces in the two main spans. The bridge site has especially harsh environmental conditions with strong winds, strong currents, and most notably, high seismicity, adding challenges to the bridge design. In the process of detail design, a comprehensive set of global analyses have been conducted. This paper identifies some of the different sets of analyses and special challenges faced in the analysis procedures. |
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| Keywords: |
suspension bridge global analysis seismic analysis time-history analysis Time History Analysis response spectrum analysis multi-span bridge wind analysis
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