Jul 2026· International journal for numerical and analytical methods in geomechanics (Print)· Vol 50, pp. 5307-5324· 0 citations· 28 references
Abstract
In underground space engineering, the down‐crossing of a tunnel beneath an existing pipeline often leads to soil settlement beneath the pipeline, creating a gap between the pipeline and the soil. This can result in the loss of local support under the pipeline, significantly decreasing its safety and reliability. To analyze the effects of such gaps on pipelines, this study proposes a matrix transfer and iteration approach based on a discontinuous Timoshenko beam theory, aiming to evaluate the mechanical response of pipelines due to pipeline‐soil gap. Through the comparisons with centrifuge model tests, the accuracy and correctness of this approach are validated. Finally, a parameter analysis is conducted to exhibit the influence of ground loss volume, the trough width parameter, eccentricity, shear layer thickness, pipeline‐tunnel clearance ratio, and relative stiffness between the pipeline and soil on the pipeline responses. Based on the analysis results, some recommendations for practical engineering are provided.
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 ef...
Yu-Xiang Li, Guang Wang, Cheng-Bin Zhang et al.· SAE technical paper series· 0 citations
The operational safety of existing shield tunnels is increasingly threatened by construction activities in the proximity domain. Accurate prediction of their longitudinal response is thus of great importance. Previous research usually adopted the Winkler or Vlasov foundation models coupled with Euler‐Bernoulli beams...
Yu-Kai Zhou, Wei-Ming Huang, Jinchang Wang et al.· International journal for nu...· 0 citations
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 gas pipelines crossing irrigation canals are critical infrastructure that may be affected by canal rehabilitation, embankment instability, ground deformation, and fluctuating hydraulic conditions. This study presents a sequential numerical assessment framework integrating slope stability, ground deformation, soi...
S. Nontananandh, Sutasinee Intui, Siwawoot Papattapong et al.· Infrastructures· 0 citations
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