Viaduct over the Riudellots river

Name and location
Viaduct over the Riudellots river near to the municipality of Sant Julià de Ramis (Girona, Spain)
High Speed Railway Line Madrid-Zaragoza-Barcelona-French border.
Section: Sant Julià de Ramis – Cornella del Terri.

Key features
Total Length: 164m
Spans: 26.5m + 3x37m + 26.5m
Average height: 22m
Use: High Speed Railway
Materials: Reinforced concrete piers and abutments and prestressed concrete deck.
Construction: Span by span method on falsework supported on the ground.

Property
Railway Infrastructure Administrator, ADIF, Spain

Construction
COPROSA
Years: 2007-2010

BT Intervention
Construction project for COPROSA, technical assistance and engineering construction work.

General information
Drawings

General information

The viaduct crosses the Riudellots river with a total length of 164m . It is located in the High Speed Line Madrid-Zaragoza-Barcelona-French border, between Barcelona and the French border.

The static scheme is the classical for railway bridges:
– The deck is a prestressed concrete continuous box beam, 2.64m constant depth, supported on reinforced concrete piers and abutments.
– Longitudinal fixed point, against horizontal actions, Is placed on an abutment. The deck is transversally fixed to all piers by means of pot bearings.The piers have a solid “I” cross section

It is noteworthy that the viaduct is located in an area of moderate seismic activity, with basic soil acceleration a = 0.09g, this action has being decisive in the design of many elements of the structure.

The foundations of the central piers should be deep, with piles 1500 mm diameter. The foundations of the extreme piles and abutments can be direct.

The deck is constructed by the span by span method on a portal frame falsework supported on the ground. The concreting of cross section has been done in two sub-phases, botttom slab + webs and top slab.

Drawings

Viaduct over the Riudellots river 1

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Viaduct over the Riudellots river 2

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Viaduct over the Riudellots river 3

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Viaduct over the Riudellots river 4

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Viaduct over the Riudellots river 5

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