Puente Nigale – Seismic Design of the Cable-stayed Main Bridges
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Bibliographic Details
| Author(s): |
Peter T. Laursen
Vasco Amaral J. L. D. Costa Lars Hansson Sam Yao Marie D. Johnsen |
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| Medium: | conference paper | ||||
| Language(s): | English | ||||
| Conference: | IABSE Symposium: Engineering for Progress, Nature and People, Madrid, Spain, 3-5 September 2014 | ||||
| Published in: | IABSE Symposium Madrid 2014 | ||||
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| Page(s): | 2017-2024 | ||||
| Total no. of pages: | 8 | ||||
| Year: | 2014 | ||||
| DOI: | 10.2749/222137814814068508 | ||||
| Abstract: |
This paper presents details of the seismic design of the main bridges for the Segundo Cruce del Lago de Maracaibo (Puente Nigale) fixed-link project. The link is 12 km long from shore to shore, and consists of east and west approach bridges and a main cable-stayed bridge over the navigation channel. The link accommodates two parallel bridge structures, one for road traffic and one for rail service. The main bridges consists of two parallel cable stayed bridges with main spans of 430 m and is situated in a seismically active area characterized by a peak ground acceleration of about 0.27g for a 1000 year return period event. The paper discusses the seismicity in the project area, the development of the seismic design loads, the seismic design criteria, the seismic design strategy and the seismic design of the structure. In particular, the deep pile foundations on soft soil presented unique challenges to the seismic design. |
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| Keywords: |
bridge seismic push-over analysis cable-stayed fixed link
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