Long-distance buried pipelines are the core type in pipeline transportation; the technical indexes and requirements for protection are stricter. In the previous coupling model of pipe and soil, the in-situ soil and backfill soil are treated as a unified continuous medium, and the actual geometric shape and boundary effect of the pipe trench are ignored through simplification of the calculation model. In this study, a new coupling model of in-situ soil, backfill soil, and pipeline is proposed to analyze the actual strain state of buried pipeline with different backfill soil and in-situ soil materials. A model was established based on the ANSYS software to simulate and investigate the mechanical behavior of strike-slip fault-crossing buried pipelines under real trench conditions. By varying multiple parameters, this study analyzes the effects of different operating conditions on the strain distribution and magnitude of buried pipelines. The findings of this study can serve as a reference for the design, construction, and protection of buried pipelines traversing active faults.
Typically, triggered by geological hazards such as landslides, ground displacement acts as the main cause for the failure of buried pipelines. To maintain the structural integrity of these pipelines, an in-depth investigation is required to understand how these pipelines, subjected to landslide thrust, respond mechanic...
Rui-Jia Zhang, Shao-Can Dong, Xin-Yu Wang et al.· SAE technical paper series· 0 citations
Buried pipelines are vulnerable to permanent ground deformation from reverse faulting, yet their response in saturated conditions is not well understood. This study uses a validated three-dimensional finite-element model to investigate the behavior of buried steel pipelines subjected to reverse fault movement in sa...
Sourabh Kumar, Rohan Deb, Subhadeep Banerjee et al.· International Journal of Geo...· 0 citations
In recent years, forest fires have occurred frequently, and extremely high temperatures can easily cause plastic deformation of buried pipelines. To clarify the temperature-stress variation law of natural gas pipelines under wildfire action, this study, based on heat transfer theory and using the finite element method,...
Xi-Ran Cheng, Jiang Meng, Prof. X. Hu et al.· Processes· 0 citations
Due to the cross-section characteristics of rectangular pipe jacking, the “soil-carrying effect” of overlying soil migration with the pipeline is prone to occur during jacking in shallow strata, resulting in a sharp increase in jacking resistance and large deformation of the strata. In this paper, a visual similarity m...
Jing-Ran Guo, H. Ming, Kai-Qi Li et al.· Buildings· 0 citations
A coupled explosive–air–soil–pipeline model was developed in ABAQUS using the coupled Eulerian–Lagrangian approach to investigate the response of buried steel pipelines under passive near-field blast loading. The effects of pipe diameter, wall thickness, standoff distance, explosive charge, and pipeline burial depth...
Jian-Jun Yuan, Hong-Tu Lu, Lian-Min Cao et al.· Journal of Pipeline Systems...· 0 citations
We use cookies to run the site and, with your consent, for analytics and to show ads.
See our Cookie Policy.
