EUROCODE 2 WORKED EXAMPLES - Federbeton

EC2 – worked examples 6-40
EXAMPLE 6.15 Slabs 1,2 [EC2 clause 5.10 – 6.1 – 6.2 – 7.2 – 7.3 – 7.4]
As two dimensional member a prestressed concrete slab is analysed: the actual structure is
described in the following point.
6.15.1 Description of the structure
The design example proposed in this section is related to a railway bridge deck made up by
a continuous slab on three spans with two orders of prestressing tendons (longitudinal and
transverse prestressing). The slab is designed in category A (see Eurocode 2, Part 2, table
4.118) for fatigue reasons. The deck rests on abutments and circular piers and has a overall
breadth of 13.60 m with two side-walks of 1.40 m width, two ballast retaining walls and, in
the middle, two track spacing of 5.0 m. The slab presents a constant thickness of 1.50 m
for a central zone 7.0 m width, whilst is tapered towards the extremity with a final height
of 0.6 m. Fig.s 6.29 and 6.30 represent the principal geometric dimension of the slab
bridge and supports’ scheme.
Table of Content
Fig. 6.29 Plan view of the structure and supports’ scheme
1 Example taken from example 7.2 “slabs” by prof. Mancini, FIB Bullettin n°3, “Structural Concrete
Textbook on Behaviour, Design and Performance Vol. 3: Durability - Design for Fire Resistance - Member
Design - Maintenance, Assessment and Repair - Practical aspects” Manual - textbook (292 pages, ISBN 978-
2-88394-043-7, December 1999).
2 See too EN 1992-2 Eurocode 2, bridge design.