Rabia Khelif  , Kamel Chaoui  , 
    Reliability Analysis of Buried Hdpe Pipes,
    Journal of Engineering and Applied Sciences,
    Volume 2,Issue 4,
    2007,
    Pages 728-732,
    ISSN 1816-949x,
    jeasci.2007.728.732,
    (https://makhillpublications.co/view-article.php?doi=jeasci.2007.728.732)
    Abstract: Safety range quantification of buried pipes such as gas pipeline is an important tool for controlling risk specifically, when unexpected events occur like earthquakes and landslides. Usually deterministic approach is used to analyse the behaviour of the structure considering an idealised soil model. Reliability approach involves soil loading as random variable leading to better modelling of the tube soil interaction. The approach uses FORM/SORM methods to determine a reliability index of the pipeline structure. A mechanical model is developed, with a failure mode which includes the main parameters that can improve safety in these structures. The interest of this study is to provide a realistic treatment of uncertainties and an evaluating method of safety factors. The aim of this reseaech is to present a reliability approach to assess the lifetime of buried High-Density Polyethylene (HDPE) gas pipes with regard to temperature gradient, fluctuating internal pressure, external loads and residual stress.
    Keywords: Reliability index;HDPE;safety margin;pipe;lifetime