| Titre | Dégradation et renouvellement des infrastructures [Un modèle de survie par cohorte] | |
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| Auteur | Raimund Herz | |
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Revue | Flux |
| Numéro | no 23, janvier-mars 1996 | |
| Page | 21-36 | |
| Résumé anglais |
Infrastructure and population age in a similar way. Both have age structures where wars, depression and growth periods leave their marks. After periods of growth, periods of infrastructure deterioration always follow in due time. While populations regenerate through births, infrastructure renewal is a major investment decision. If renewal is delayed, social costs rise and standards go down. The deterioration model proposed here describes the ageing process as a function of the type of material, technology and stress. The cohort survival approach is then applied to the existing stock of infrastructure. Elements which fail and no longer meet the requirements constitute an annual demand for renewal. For given budget constraints and supply standards, the demand for infrastructure renewal may be realized with different renewal strategies. This is shown for the stock of water mains in the City of Stuttgart, and a prognosis is given up to the year 2050. Source : Éditeur (via Persée) |
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| Article en ligne | http://www.persee.fr/web/revues/home/prescript/article/flux_1154-2721_1996_num_12_23_1178 |
