Page 536 - 360.revista de Alta Velocidad - Nº 6

González Franco, Ignacio

Figure 2. Study case analysed.
For each of the sub-section different types of terrain will be assigned (flat profile, slightly-rough
profile, mountainous and very mountainous profile) and the percentage of type of terrain and,
therefore, the length of each of the sub-section used in the analysis carried out is described in
the following table (Table 1).
Table 1. Types of terrain of the study case.

The percentage of the type of terrain that the line would cross has been determined and
predefined from average values of the Spanish high-speed lines. Furthermore, for each of the
subsections a maximum design speed is assigned within a range between 200km/h and 500km/h
with increments of 10km/h, which implies that it is necessary to solve 923,521 scenarios.

Table 1: Combination of the maximum design speed for each scenario proposed.

2.2 Hypothesis of a CBA

The table below (Table 2) gathers the main hypothesis used in order to apply the CBA model.

Table 2. CBA input parameters.

534 360.revista de alta velocidad