Los Gallardos – Sorbas High Speed Railway Viaducts. New Anti-Seismic Device to Face Horizontal Forces
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Bibliographic Details
| Author(s): |
Óscar Ramón Ramos
Jorge De Vena Guillermo Ortega Marcos J. Pantaleón |
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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): | 2563-2570 | ||||
| Total no. of pages: | 8 | ||||
| Year: | 2014 | ||||
| DOI: | 10.2749/222137814814069291 | ||||
| Abstract: |
In Los Gallardos – Sorbas segment of the High Speed Railway between Murcia and Almería, there are 4 viaducts built span by span: Almocaizar Viaduct, Barranco Hondo Viaduct, La Gloria Viaduct and Barranco Los Giles Viaduct. This bridges are formed by a continuous concrete single-cell post- tensioned box-girder, erected span by span by means of a self launching formwork gantry and full shoring. They are situated in a medium risk seismic zone. In order to face the longitudinal earthquake action, a new anti-seismic device has been designed. It consists of hydraulic viscous dampers, to dissipate energy, in the abutments and sliding pendulum bearings with low friction, for recentering, on the piers. A nonlinear seismic analysis was carried out for the dimensioning of the anti seismic devices. Artificial acceleration time history for the earthquake analysis was needed. |
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| Keywords: |
post-tensioned concrete high-speed railway non-linear seismic analysis hydraulic viscous dampers sliding pendulum bearings
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