Page 364 - 360.revista de Alta Velocidad - Nº 5

Campos Zaldiernas, Javier. Díaz García, Sarai. Galán Alguacil, Álvaro. González Pérez, Javier.

Annual probability of Economic Economic risk

Failure mechanisms failure impact
(-) (€) (€/year) (%)

Structural collapse of the culvert barrel 0.00842 136829 1151.5 49.3

Slope instability caused by afflux 0.00138 57312 78.8 3.4

Slope instability caused by leakage out of barrel 0.00013 7841 0 10.1 0.4

Slope instability caused by headwall collapse 0.00220 57308 125.9 5.4
Slope instability caused by undermining at
inlet our outlet 0.00208 56788 118.3 5.1

Piping into culvert 0.00264 117859 310.6 13.3

Piping on outside of culvert due to afflux 0.00004 112439 5.0 0.2

Piping on outside of culvert due to leakage 0.00171 117859 201.6 8.6
out of culvert
Erosion by overtopping flows 0.00472 70461 332.4 14.2

Cross catchment flooding 0.00032 524 0.2 0.1

Table 1. Main results obtained: annual failure probability, economic impacts and risk.

INCIDENCE
Incidence Risks factor/pathologies
(%)

Partial or total blockage of the culvert barrel 34.50

Structural deterioration of the culvert barrel 7.83

Structural deterioration of the culvert headwall or/and wingwalls 14.34

Evidences of substantial erosion at the culvert outlet or inlet (undermining) 29.60

Deficiencies found in the hydraulic capacity of the culvert 13.73

Table 2. Main results obtained: risk factors and pathologies observed.

Tables 1 and 2 show the statistics of the results obtained in the risk analysis performed in some
roadways in the province of Ciudad Real. Table 1 shows the mean values of probability, total
economic impact and annual risk of the ten failure mechanisms studied.

362 360.revista de alta velocidad