What does this research mean for the field?

In saturated soils subjected to reverse fault movement, steeper fault angles and deeper embedment significantly increase pipeline bending strains, with drained conditions inducing substantially higher strains than undrained conditions. Novelty: ClaimNovelty.NOVEL_FINDING. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

Investigate the structural performance and bending strains of buried steel pipelines subjected to reverse fault movement in saturated soils under drained and undrained conditions.

September 14, 2026International Journal of Geomechanics

Analysis of Buried Pipeline–Reverse Fault Interaction in Saturated Soil under Drained and Undrained Loading Conditions

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Authors

SKSourabh KumarIndian Institute of Technology Madras RDRohan DebIndian Institute of Technology Madras SBSubhadeep BanerjeeIndian Institute of Technology Madras

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Implication

Numerical simulation reveals increased bending strain during drained reverse faulting in saturated soils, highlighting crucial risk factors for pipeline seismic design.

Key Points

Investigate the structural performance and bending strains of buried steel pipelines subjected to reverse fault movement in saturated soils under drained and undrained conditions.
Constructed and validated a three-dimensional finite-element model incorporating a modified Drucker–Prager Cap Plasticity constitutive model for the soil.
Conducted parametric analyses evaluating the effects of fault offset, pipe embedment depth, pipe wall thickness, and fault dip angle under drained and undrained states.
Steeper fault dip angles (45°) and deeper pipe embedment substantially increased bending strains because of greater vertical displacements and stronger soil confinement.
Drained soil conditions produced substantially higher bending strains than undrained conditions, while undrained loading induced significant excess pore pressure (particularly at shallower fault angles).
Formulated a predictive power-law relationship linking maximum pipeline bending strain to a combined nondimensional soil–pipe interaction number.

Cite This Study

Kumar et al. (2026) studied this question.

synapsesocial.com/papers/6aa7b2c70926e14a848b151a https://doi.org/10.1061/ijgnai.gmeng-13493

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Implication

Numerical simulation reveals increased bending strain during drained reverse faulting in saturated soils, highlighting crucial risk factors for pipeline seismic design.

Analysis of Buried Pipeline–Reverse Fault Interaction in Saturated Soil under Drained and Undrained Loading Conditions

Discussion

Member takes

Implication

Key Points

Cite This Study

Analysis of Buried Pipeline–Reverse Fault Interaction in Saturated Soil under Drained and Undrained Loading Conditions

Discussion

Member takes

Implication

Key Points

Cite This Study

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