Longitudinal Bending and Failure of GFRP Pipes Buried in Dense Sand under Relative Ground Movement

Almahakeri, Mohamed; Fam, Amir; Moore, Ian D.

doi:10.1061/(asce)cc.1943-5614.0000340

Cited by 18 publications

(5 citation statements)

References 21 publications

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“…Experimental studies have been conducted in the past to understand lateral pipeline-soil interaction in sand (e.g. Audibert and Nyman 1977;Trautmann 1983;Scarpelli et al 1999;Turner 2004;Wijewickreme et al 2009;Daiyan 2013;Almahakeri et al 2013Almahakeri et al , 2014. From the test results, the force-displacement curves could be obtained and the failure mechanisms could be interpreted.…”

Section: Introductionmentioning

confidence: 99%

Finite element modeling of lateral pipeline–soil interactions in dense sand

et al. 2016

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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 dense sand including the nonlinear pre- and post-peak behaviour with a smooth transition and the variation of the angle of internal friction and dilation angle with plastic shear strain, loading conditions (triaxial or plane strain), density, and mean effective stress. Comparing FE and experimental results, it is shown that the MMC model can better simulate the force–displacement response for a wide range of lateral displacements of the pipe for different burial depths, although the peak force on the pipe could be matched using the MC model. Examining the progressive development of zones of large inelastic shear deformation (shear bands), it is shown that the mobilized angle of internal friction and dilation angle vary along the length of the shear band; however, constant values are used in the MC model. A comprehensive parametric study is also performed to investigate the effects of pipeline diameter, burial depth, and soil properties. Many important aspects in the force–displacement curves and failure mechanisms are explained using the present FE analyses.

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Section: Introductionmentioning

confidence: 99%

Finite element modeling of lateral pipeline–soil interactions in dense sand

et al. 2016

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“…Glass fiber reinforced polymer (GFRP) composites much used in civil engineering applications due to present superior properties as conventional materials, such as thermomechanical properties, chemical resistance [2,3], high strength-to-weight ratio, lightness and corrosion resistance [4][5][6]. Depending on the type of resin used (polyester, epoxy, or others), pipes can work in different temperature ranges and in the most varied aggressive environments [7].…”

Section: Introductionmentioning

confidence: 99%

Development of unsaturated polyester/fiber glass composites with foundry sand

Zimmermann¹,

Junca²,

Bernardo³

et al. 2022

Tecnol. Metal. Mater. Min.

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In this study, the effect of the use of foundry sand as a filler on the formation of different layer configurations in polyester/fiber glass composites was investigated. The composites were produced by hand lay-up lamination and their physical, mechanical and morphological properties were investigated. In the samples containing sand as the filler, the configuration of the layers affected the interface region of the phases, thus significantly affecting the mechanical properties of the samples. The morphological analysis of the composites revealed the presence of regions with moderate interaction between the phases (polyester / glass fiber and polyester / foundry sand), which can cause delamination of the layers and consequently the deterioration of the mechanical properties of the composites when compared to the composite without the sand.

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“…In the recent years, there has been a steady rise in utilization of light-weight composite materials in buried pipelines, providing an alternative to the conventional steel pipes. Fiber-reinforced plastic (FRP) pipes, in particular, offer better corrosion resistance of polymer composites, lower thermal expansion factor, high strength-to-weight ratio, low friction factors, as compared to the conventional steel buried pipes [1][2][3][4][5] . However, there is a growing concern regarding the structural integrity of these flexible light-weight composite pipes, given that the modulus and pressure expansion values of typical FRP products being over 10 times lower and 25 times higher than those of their traditional metallic counterparts, respectively.…”

Section: Introductionmentioning

confidence: 99%

“…Fiber-reinforced plastic (FRP) pipes, in particular, offer better corrosion resistance of polymer composites, lower thermal expansion factor, high strength-to-weight ratio, and low friction factors, as compared to the conventional steel buried pipes. [1][2][3][4][5] However, there is a growing concern regarding the structural integrity of these flexible light-weight composite pipes, given that the modulus and pressure expansion values of typical FRP products being over 10 times lower and 25 times higher than those of their traditional metallic counterparts, respectively. Moreover, these underground facilities, which serve a wide array of purposes ranging from sewerage and water lines to fuel transportation, are subjected to combinations of complex loading such as internal pipe pressure, vertical earth loads, surface live loads, and movement at pipe bends.…”

Section: Introductionmentioning

confidence: 99%

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Will a buried composite pipeline system fail at its joints under the effects of overburden soil, pipe operating pressurization, and traffic loads?

Tse

Toh

Tan

et al. 2020

Journal of Composite Materials

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In real world applications, buried pipelines span across great lengths. It is inevitable that certain sections of a buried pipeline experience external loads in addition to top soil overburden, such as weights of aboveground buildings and traffic loads located directly above these sections. The present study investigated the effects of overburden soil, pipe internal pressurization, and traffic loads on fiber-reinforced plastic pipelines at various pipe sections with particular emphasis on pipe joints using finite element method. This study includes realistic modeling of traffic loading on service road running across a buried pipeline system, consisting of straight, bent, and joint sections. Our results also revealed that surcharge loading might not be a predominant factor in pipe failure or leakage issues as compared to the cyclic pipe internal pressurization. Moreover, it was also confirmed in our study that the pipe joint remained as the most critical region for pipe failure or leakage issues.

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Longitudinal Bending and Failure of GFRP Pipes Buried in Dense Sand under Relative Ground Movement

Cited by 18 publications

References 21 publications

Finite element modeling of lateral pipeline–soil interactions in dense sand

Finite element modeling of lateral pipeline–soil interactions in dense sand

Development of unsaturated polyester/fiber glass composites with foundry sand

Will a buried composite pipeline system fail at its joints under the effects of overburden soil, pipe operating pressurization, and traffic loads?

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