Study on Axial Stress of Buried Pipeline Under Lateral Landslide
Buried pipelines laid in mountainous areas are often affected by mountain landslides,especially horizontal land-slides,which can cause deformation and rupture of buried pipelines,which is not conducive to the safe operation of pipelines.In this paper,the axial stress of the pipeline under the action of transverse landslide was studied.The nonlinear contact model was selected for finite element analysis,and the soil cohesion,Poisson's ratio,internal pressure and diameter-thickness ratio around the pipeline were changed for finite element calculation.The results show that the stress is concentrated in the middle and edge of the landslide displacement,and the pipeline at the edge of the landslide displacement is compressed at 3 points and pulled at 9 points.The pipeline in the middle of the landslide displacement is pulled at 3 points and pressed at 9 points.By analyzing the variation curve of the axial stress of the pipeline,the variation formula of the axial stress of the pipeline is summarized,which provides a theoretical reference for the protection of the pipeline.
buried pipelinetransverse landslidefinite element analysisaxial stress
NETL
NSTL
万方数据
维普
