Uplift Resistance of Buried Pipelines in Partially Saturated Sands

Robert, Dilan; Thusyanthan, NI

doi:10.1016/j.compgeo.2017.12.010

Cited by 28 publications

(2 citation statements)

References 18 publications

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“…e results of pipe displacement, strain, and internal force show that soil trenching in unsaturated soil contributes to finite deformation near the buried pipe and leads to lower internal force. Robert and usyanthan [15] conducted full-scale tests and finite element parametric studies on pipes buried in unsaturated soil and studied the effects of soil water content, soil cover height, and soil relative density on the uplift peak value of pipes. Williams et al [16] studied the plane strain uplift resistance of pipes in saturated sand to reveal the effects of low relative density backfill and partially drained soil response on the uplift resistance of pipes, and the results suggested that the soil state has a strong influence on the pipe-soil failure mechanism.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Response and Parametric Sensitivity Analyses of a Drainage Pipe under Multiphysical Coupling Conditions

Fang

Yang

et al. 2019

Complexity

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Current research was not dedicated to investigate the mechanical behavior of a concrete drainage pipe under multiphysical coupling conditions of overburden pressure, traffic loads, groundwater, and pipe fluids. This study proposes a new numerical solution method for coupled stress, seepage, and flow fields based on a validated finite element model. The model was developed by ABAQUS and FLUENT and then solved simultaneously using the MpCCI (mesh-based parallel-code coupling interface) platform. Results show that the tensile stress at the springline and the radial displacement at the crown (or invert) of the bell under the effect of groundwater alone were reduced by 50.5% and 38.1%, respectively, compared to the effect of traffic load alone. Parametric analyses show that vehicle speed and fluid height have a slight impact on the pipes. The soil cover depth, wheel pressure, and gasket strength are directly proportional to the pipe stress and vertical displacement. Within the scope of their respective changes, the pipe stresses were increased by 34.4%, 36.7%, and 28.5%, and the vertical displacements were increased by 124%, 95.85%, and 87.7%. The bedding and backfill strengths are proportional to the pipe stress and inversely proportional to the vertical displacement. Within the scope of their respective changes, the pipe stresses were increased by 18.2% and 20.0%, and the vertical displacements were decreased by 11.4% and 10.4%. Sensitivity analyses show that soil cover depth has a greatest impact on the pipe, followed by traffic load.

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Section: Introductionmentioning

confidence: 99%

Mechanical Response and Parametric Sensitivity Analyses of a Drainage Pipe under Multiphysical Coupling Conditions

Fang

Yang

et al. 2019

Complexity

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“…performed 2D FE analyses to examine the uplift pipe-sandy soil interaction and developed hyperbolic and bilinear relations for the uplift force-displacement curves taking into account the density and the burial depth to diameter ratio Chakraborty and Kumar (2014). performed FE analyses and examined the variation of friction angle in the soil domain concerning the sandy soil type, the burial depth, and the pipe diameter Robert and Thusyanthan (2018). examined the uplift resistance of buried pipes in partially saturated sand because the latter is not considered in the existing expressions.…”

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confidence: 99%

Onshore Buried Steel Fuel Pipelines at Fault Crossings: A Review of Critical Analysis and Design Aspects

Melissianos

2022

J. Pipeline Syst. Eng. Pract.

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Onshore buried steel pipeline infrastructure is a critical component of the fuel supply system. Pipeline failure due to seismic actions is socially, environmentally, and economically unacceptable and thus the design of pipelines at geohazard areas, such as fault crossings, remains a hot topic for the pipeline community. There is an intense research effort on the evaluation of the pipeline mechanical behavior and the strength verification at fault crossings. Still, some aspects need in-depth consideration concerning practical applications. A state-of-the-art review is presented on three critical analysis and design aspects, namely the calculation of the design fault displacement via deterministic and probabilistic methods, the effect of numerical modeling parameters such as soil spring properties, and the alternative pipe protection measures in terms of availability, efficiency, and selection process. The critical review offers a thorough insight on what is available and how to employ it in design, assisting engineers and pipe operators in improving pipe safety.

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Adaptive Drainage Decompression System Mitigates Liquefaction Uplift of Underground Utility Tunnels

Tian,

Yao,

Sun

et al. 2024

Lecture Notes in Civil Engineering

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Uplift Resistance of Buried Pipelines in Partially Saturated Sands

Cited by 28 publications

References 18 publications

Mechanical Response and Parametric Sensitivity Analyses of a Drainage Pipe under Multiphysical Coupling Conditions

Mechanical Response and Parametric Sensitivity Analyses of a Drainage Pipe under Multiphysical Coupling Conditions

Onshore Buried Steel Fuel Pipelines at Fault Crossings: A Review of Critical Analysis and Design Aspects

Adaptive Drainage Decompression System Mitigates Liquefaction Uplift of Underground Utility Tunnels

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