Issue 30

A. De Iorio et alii, Frattura ed Integrità Strutturale, 30 (2014) 478-485; DOI: 10.3221/IGF-ESIS.30.58 483 Figure 3 : Photographic top view of the chosen testing field. Figure 4 : Load vs. track displacement curves for some typical scenarios. The different components of the track panels are listed in Tab. 2. The maximum values of the ballast resistance, corresponding to a single sleeper, together with the limit values which correspond to the sliding of the sleeper on the ballast due to pseudo plastic failure of this latter, are reported in Tab. 3. The interpretation and the use of these results will be widely discussed in other papers, once the test campaign is completed.