Harmonisation des débits de conception issus des modèles de simulation du ruissellement en milieu urbain

Abstract

The Rational Method (RM) is used since the mid-nineteenth century to calculate the runoff in the design of drainage works in urban areas. Given the simplifying assumptions inhérent in this method is valid increasingly the choice of design parameters using software based on more sophisticated models such as the non-linear réservoir model (MRNL). The engineer is now in the présence of sometimes significant différences between the design flows calculated by two différent models, which makes him difficult work of validation. The aim of this paper is to shed light on the various parameters involved in the calculation of runoff by the MRNL and the RM in order to harmonize the results obtained by both methods. We have established, in particular, a relationship between parameters of MRNL and the MR which can achieve substantially the same design flow by the two hydrological models. The validation of the proposed approach on synthetic and real networks showed a good corrélation between flows calculated by both methods. The results of this work can be used to validate the calculation of design flow calculated by either of two methods.

Date	25 Jun 2010
Original language	French
Awarding Institution	École de technologie supérieure
Supervisor	Saad Bennis (Supervisor)