Axial Pullout Behavior of Buried Medium-Density Polyethylene Gas Distribution Pipes

Published on Jul 1, 2021in International Journal of Geomechanics3.819
· DOI :10.1061/(ASCE)GM.1943-5622.0002101
Auchib Reza1
Estimated H-index: 1
(MUN: Memorial University of Newfoundland),
Ashutosh Sutra Dhar14
Estimated H-index: 14
(MUN: Memorial University of Newfoundland)
Abstract This paper presents an experimental investigation into the axial pullout behavior of buried medium-density polyethylene (MDPE) pipes under various pulling rates. Tests were conducted in a ...
#1Parththeeban Murugathasan (MUN: Memorial University of Newfoundland)H-Index: 1
#2Ashutosh Sutra Dhar (MUN: Memorial University of Newfoundland)H-Index: 14
Last. Bipul Hawlader (MUN: Memorial University of Newfoundland)H-Index: 15
view all 3 authors...
Buried pipelines, used for transporting liquid and gas, are often subjected to axial pulling forces due to seasonal temperature changes and/or relative ground movements. The axial pullout force is ...
#1Tim GerlachH-Index: 2
#2Martin AchmusH-Index: 11
Last. Mauricio TercerosH-Index: 3
view all 3 authors...
Abstract Within the design process of district heating networks, the soil resistances in axial and lateral pipeline direction are commonly treated independently as friction resistance and bedding pressure. However, at curved segments or near ellbows, these resistances occur simultaneously and affect each other. The state of knowledge regarding this topic is summarized, and it is shown that only limited information exists for this case of loading. Therefore, a three-dimensional finite element mod...
#1Brian B. Sheil (University of Oxford)H-Index: 9
#2Christopher M. Martin (University of Oxford)H-Index: 26
Last. D. CoyneH-Index: 1
view all 6 authors...
This paper describes a full-scale laboratory study of the axial sliding behaviour of a trenched pipeline surrounded by sand backfill. Cyclic axial displacements are applied to a heavy pipe buried in a narrow trench (less than three pipe diameters wide), using various backfill cover depths and two different soils: dry Hostun sand and a damp, silty sand. A novel testing tank is employed, with compressible foam seals to allow the pipe to settle as it moves axially, and a pressure bag system to simu...
#1Masood Meidani (McGill University)H-Index: 3
#2Mohamed A. Meguid (McGill University)H-Index: 19
Last. Luc Chouinard (McGill University)H-Index: 15
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AbstractThe expansion of urban communities around the world resulted in the installation of utility pipes near existing natural or artificial slopes. These pipes can experience significant increase...
#1Kshama Roy (MUN: Memorial University of Newfoundland)H-Index: 4
#2Bipul Hawlader (MUN: Memorial University of Newfoundland)H-Index: 15
Last. Ian D. Moore (Queen's University)H-Index: 27
view all 4 authors...
Finite element (FE) analyses of pipeline–soil interaction for pipelines buried in dense sand subjected to lateral ground displacements are presented in this paper. Analysis is performed — using the Arbitrary Lagrangian–Eulerian (ALE) method available in Abaqus/Explicit FE software — in the plane strain condition using the Mohr–Coulomb (MC) and modified Mohr–Coulomb (MMC) models. The MMC model considers a number of important features and properties of stress–strain and volume change behaviour of ...
#1Dharma Wijewickreme (UBC: University of British Columbia)H-Index: 15
#2Lalinda Weerasekara (Tetra Tech)H-Index: 2
AbstractThe performance evaluation of buried extensible plastic pipelines, such as polyethylene pipes in the gas distribution industry, in areas prone to ground movement is a key consideration for many utility owners. Considering the relatively smaller deformation stiffness and nonlinear stress-strain response of these pipes compared with those of steel pipes, a good understanding of the basic soil–pipe interaction mechanisms forms a critical part in these evaluations. The increase in soil norma...
#1K JungJaiH-Index: 1
#2D O’RourkeThomasH-Index: 1
Last. A OlsonNathanielH-Index: 1
view all 3 authors...
Soil–pipeline interaction for uplift in granular soil is evaluated by means of a two-dimensional, finite element (FE) continuum model with a Mohr–Coulomb (MC) yield surface for peak strength, a strain-softening relationship tied to critical void conditions, and an equivalent modulus that is consistent with soil deformation at maximum uplift resistance. The model accounts for soil migration beneath the pipe through FE mesh adjustment coordinated with upward pipe displacement. A systematic compari...
#1DaiyanNasser (St. John's University)H-Index: 1
#2KennyShawn (St. John's University)H-Index: 1
Last. PopescuRadu (URS Corporation)H-Index: 2
view all 4 authors...
This paper presents results from an experimental and numerical study on the axial–lateral interaction of pipes with dense sand. A series of centrifuge tests were conducted, with a rigid pipeline displaced in the horizontal plane in a cohesionless test bed. The relative pipe–soil interaction included axial, lateral, and oblique loading events. A three-dimensional continuum finite element model was developed using ABAQUS/Standard (Hibbitt et al. 2005) software. The numerical model was calibrated a...
#1Run Liu (TJU: Tianjin University)H-Index: 2
#2Lin Ping Guo (TJU: Tianjin University)H-Index: 1
Last. Yu XuH-Index: 1
view all 4 authors...
A series of model tests were carried out to investigate the soil resistance when the buried pipe segment moved in the sand. In the tests, the pipe segments were pulled out in vertical, lateral and axial directions and the pipe segments movement and soil resistance were recorded. Observed data show that the soil resistance depends on the pipe diameters and the depth of cover. According to the uplift test results, the force-displacement relationships with smaller depth of cover are greatly differe...
#1Shaurav AlamH-Index: 5
#2Erez N. AlloucheH-Index: 25
Soil friction is an important design factor for restrained buried pipes with internal pressure. Utilizing the bedding soil for thrust restraint eliminates the need for thrust blocks and makes pipe installation simpler. A full scale experimental investigation of soil-pipe friction coefficients was performed for an innovative, direct buried, restrained, PVC pipe under controlled laboratory conditions. The experimental work covered a wide range of soil types, over burden pressures and moisture cont...
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