EUROCODE 2 WORKED EXAMPLES - Federbeton

EC2 – worked examples 6-50
where φdin , being the dynamic factor equal to 1.162, is evaluated below.
Table of Content
Fig. 6.39 Adopted load arrangement for LM71 load model
The uniformly distributed load qvk according to Eurocode 1.3 is:
qvk = 1.1 × 80 × φdin → qvk,2 = 102.3 kN/m
without any limitation in length. Fig. 6.39 shows the LM71 arrangement adopted in the
calculations.
The load model SW/0 is represented in Fig. 6.40 and its characteristic value results:
qvk = 1.1 × 133 × φdin = 170.0 kN/m
Fig. 6.40 Load model SW/0
The load model SW/2 is represented in Fig.6.41 and its characteristic value results:
qvk = 1.1 × 150 × φdin = 174.3 kN/m
Fig. 6.41 Load model SW/2
The previous load model LM71, SW/0 and SW/2 have been introduced in the FEM
analysis considering a spreading ratio of 4:1 in the ballast and of 1:1 in the concrete up to
the middle plane of the slab. In the following as left track is denoted the track which has a
positive value for the y co-ordinate, while right truck the other one. Fig. 6.42 shows which
elements are involved by spreading effects, therefore subjected to variable load.