The Strain-Based Design of Buried Pipeline Subjected to Landslides

Abstract eng:
In recent years, a number of projects have been funded in China to quantitatively evaluate the tensile and compressive strain limits of pipes and apply these limits to buried pipelines subjected to landslides. This paper covers the technical basis of strain-based design for pipelines subjected to landslides. First, finite element analyses (FEA) were conducted for a total of 594 cases covering a wide range of materials, ratios of pipe diameter to wall thickness, D/t and various internal pressures. By using the calculated data, parametric equations for strain limits of pipelines were developed. FEA analyses were also conducted for 8 cases of buried pipelines subjected to landslides. An approach for design of buried pipelines subjected to landslides using strain-based design was also proposed. It is believed that the above applications may lay the initial base of using the strain-based design method for buried pipeline subjected to landslides for pipelines in China.

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