San Benito Viaduct
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Bibliographic Details
| Author(s): |
Óscar Ramón Ramos
Guillermo Ortega José M. Martínez |
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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): | 2579-2586 | ||||
| Total no. of pages: | 8 | ||||
| Year: | 2014 | ||||
| DOI: | 10.2749/222137814814069372 | ||||
| Abstract: |
The San Benito Viaduct is a railway bridge over the Lérez River. It is in the Pontevedra – Cerponzons Section in the High Speed Atlantic Corridor, located near the city of Pontevedra, in the Northwest of Spain. The bridge is 171 m long and it consists of 3 spans: 57 m + 84 m + 30 m. It is a hyperstatic post-tensioned concrete structure: The superstructure is a variable depth single cell box girder, with a total width of 14,0 m. First, the side spans were built by means of a full shoring. After that, the central span, over the Lérez River, was erected using a segmental cantilever construction method, with cast in place segments, by means of a form traveller. Due to the presence of a tunnel following the viaduct, the last span is only 30 m long. Because of that the bearings in the abutment 2 were properly anchored to avoid uplift. |
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| Keywords: |
prestressing railroad high speed cantilever segmental construction anti-uplift bearing
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