Reliability of Buried Pipes in Heterogeneous Soil Subjected to Seismic Loads
Received: 15 December 2020 | Accepted: 2 January 2021 | Online: 6 February 2021
Corresponding author: H. Benzeguir
Dysfunctions and failures of buried pipe networks, like sewer networks, are studied in this paper from the point of view of structural reliability and heterogeneity of geotechnical conditions in the longitudinal direction. Combined soil spatial variability and Peak Ground Acceleration (PGA) induce stresses and displacements. A model has been developed within the frame of geostatistics and a mechanical description of the soil–structure interaction of a set of buried pipes with connections resting on the soil by a two-parameter model (Pasternak model). Structural reliability analysis is performed considering two limit states: Serviceability Limit State (SLS), related to large "counter slope" in a given pipe, and Ultimate Limit State (ULS), corresponding to bending moment.
Keywords:reliability index, soil-structure interaction, spatial variability, SLS, ULS, seismic action
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