Mechanical response analysis and influencing factors of different crossing modes of pipeline in landslide area
Aiming at the mechanical response of oil and gas pipelines crossing landslide areas,the finite element analysis is used to conduct a preliminary study,and then the influencing factors of the mechanical response characteristics of pipelines with different crossing modes in landslide areas are further studied.The results show that when the pipeline traverses the landslide area longitudinally,due to the friction between the pipe and soil,the pipeline will form a tensile stress concentration zone in the upper part and a compressive stress concentration zone in the lower part,and the buried depth of the pipeline in the soil has a greater impact on the stress and strain of the pipeline than the pipe diameter and soil density.When the pipeline crosses the landslide area laterally,the maximum lateral displacement of the pipeline appears in the middle of the landslide area,while the maximum stress of the pipeline appears near the boundary of the landslide area.In addition,the influences of factors such as the width of the landslide area,pipe diameter,buried depth,soil density and other factors on the lateral displacement and stress of the pipeline decrease successively.
pipelinelandslidecrossing modefinite element analysismechanical response characteristics
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