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• W4386957661 endingPage "111222" @default.
• W4386957661 startingPage "111222" @default.
• W4386957661 abstract "The accurate description of the elastic‒plastic stress‒strain of a pipeline is used to evaluate the risk that the pipeline will undergo failure during a landslide. This paper proposes a complete set of refined semi-analytical methods (SAMs) for pipeline elastic-plastic strain to accurately evaluate the safety of pipelines. First, a concise model for the calculation of landslide thrust is established based on the pipe-soil interaction mechanism as load boundaries of the SAMs. Secondly, the plastic softening bending moment-curvature relationship (BMCR) is derived to establish a difference equation for the deformation of the pipeline during the plastic stage based on the principle of internal force balance of the pipe section, and then the bending plastic strain is calculated accurately. Finally, the axial strain is fully calculated considering the interaction between axial force and bending of the pipeline. The comparison of the results of small-scale landslide tests, large-scale landslide tests, and SAM calculations shows that the improved SAM has good applicability, with 20% better accuracy than traditional methods. In conclusion, the SAM proposed in this paper can effectively guide the design and evaluation of the strain-based design pipeline." @default.
• W4386957661 created "2023-09-23" @default.
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• W4386957661 date "2023-11-01" @default.
• W4386957661 modified "2023-10-09" @default.
• W4386957661 title "Method of strain analysis of pipelines under landslides: an improved semi-analytical method for softening bending moment-curvature" @default.
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• W4386957661 doi "https://doi.org/10.1016/j.tws.2023.111222" @default.
• W4386957661 hasPublicationYear "2023" @default.
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