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Longitudinal variability of soils and structural response of sewer networks |
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| Authors: | Sidi Mohammed Elachachi Denys Breysse Laurent Houy |
| Institution: | aLM2SC, Department of Civil Engineering, University of Sciences and Technology of Oran, B.P. 1505 Elmenouar, Algéria bCDGA, University of Bordeaux 1, avenue des Facultés, 33405 Talence, France |
| Abstract: | A simple model which describes the soil–pipe interaction and accounts for the longitudinal soil variation has been developed. It is used for the analysis of the static response of a section of a buried sewer. A probabilistic analysis (Monte-Carlo method) enabling to quantify the influence of spatial variability of the geomechanical characteristics of the soil makes possible to study the parameters which can influence and drive the longitudinal response of a section of sewer. The system response is complex, soil–structure interaction depending on three different stiffnesses: soil stiffness, pipe components stiffness and joints stiffness. Various analyses have been performed to identify the parameters whose influence is the larger. A specific attention has been devoted to the fluctuation scale of the soil properties and to the stiffness of joints. |
| Keywords: | Longitudinal variability Spatial correlation Pipes Sewer networks Soil–structure interaction Risk |
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