Mechanical response of buried High-Density Polyethylene pipelines under normal fault motions

Naeini, Seyed Abolhasan; Mahmoudi, Elham; Shojaedin, Mohammad Mahdi; Misaghian, Mohsen

doi:10.1007/s12205-015-0695-3

Cited by 26 publications

(10 citation statements)

References 11 publications

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“…There are two directions for study of the external load of the pipes; one is the ground load including traffic load [ 11 , 12 ], collapse impact load [ 13 ], and ground circular loads [ 14 ] etc. Another direction is the effect of geology and soil layers, including seismic response [ 15 , 16 ], geotechnical loads [ 17 ], soil subsidence [ 18 , 19 ], and soil layer displacement [ 20 , 21 , 22 ], etc. When the buried depth of the pipes gradually deepens, the influence of the ground load on the pipes becomes smaller, and the influence of the soil gradually increases.…”

Section: Introductionmentioning

confidence: 99%

Research on the Mechanical Behavior of Buried Double-Wall Corrugated Pipes

Gao

Yang

et al. 2022

Polymers

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The mechanical behavior of buried HDPE double-wall corrugated pipes is mainly affected by the material and the structure of the pipe wall. Here we studied a peculiar material that added fly ash (FA) in high density polyethylene (HDPE) to develop composites. We have conducted research on FA/HDPE composites with different mix proportions. When 5% compatibilizer was added to the 10% FA masterbatch/HDPE composite, the Young’s Modulus of FA/HDPE composite was higher. This paper mainly studies the mechanical behavior of the structure of pipe walls for materials with this proportion of the ingredients. The mechanical behavior of double-wall corrugated pipes with different ratios of interior and exterior wall thicknesses is studied by keeping the sum of the interior and exterior wall thicknesses unchanged. Pipes with six different ratios of interior and exterior wall thicknesses are simulated; the results show that the strain of crest and liner gradually decreased and the valley strain gradually increased with the increase of the exterior wall thickness. By comparing inner and outer wall thickness ratios from 0.67 to 2.33, it is found that the structural performance and economic advantage for the double-wall corrugated pipes is best when the thickness ratio of the interior wall and the exterior wall is controlled to be from 1.3 to 1.8. This paper expounds the deformation mechanism of double-wall corrugated pipes from the perspective of mechanical behavior and structural characteristics, and provides a reference for material selection and structural design of double-wall corrugated pipes.

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Section: Introductionmentioning

confidence: 99%

Research on the Mechanical Behavior of Buried Double-Wall Corrugated Pipes

Gao

Yang

et al. 2022

Polymers

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“…Dynamic response of pipeline subjected to earthquake load was studied by Zhang et al [7] Influences of wall thickness, internal pressure and earthquake were presented in this paper. Numerical dynamic analysis was presented by Naeini et al [8] to study the pipelines subjected to earthquake load. Failure probability response of pipelines under the earthquake load was investigated by Omidvar and Karimi Kivi.…”

Section: Introductionmentioning

confidence: 99%

Influences of fiber reinforced polymer layer on the dynamic deflection of concrete pipes containing nanoparticle subjected to earthquake load

et al. 2021

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A numerical solution for dynamic analysis induced by earthquake load in concrete pipes containing SiO 2 nanoparticles warped by fiber reinforced polymer (FRP) layer is utilized in the present paper on the basis of Mori-Tanaka model.The FRP layer is used as reinforcement for the concrete pipe. Utilizing the cylindrical higher order shell theory, the concrete pipe is mathematically simulated and the related governing relations are derived based on. Utilizing numerical methods of Newmark and Galerkin, the dynamic displacement of the concrete pipe is obtained. The influence of FRP layer and its thickness, volume fraction and agglomeration of nanoparticle, boundary conditions and length to radius ratio of the concrete pipe is studied on the dynamic deflection of the concrete pipe. Numerical outcomes illustrate that the FRP layer can reduces the dynamic deflection significantly.

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“…Noor and Dhar (2003) established a 3D pipe-soil interaction model based on ANSYS and discussed the deflection deformation of the pipe under the traffic loads (simplified as static loads) [27]. By establishing a 3D finite element model, Naeini et al (2016) analyzed the deformation of the pipe under normal fault motion while considering the influence of the pipe diameter, thickness, buried depth, friction angle, and backfill density on the bending strain of the pipe [28]. Based on a reliable 3D model of cured-in-place pipes (CIPP), Zhai et al (2019Zhai et al ( , 2021aZhai et al ( , 2021b) investigated the changes in the mechanical properties of the pipes before and after the repair of carbon-fiber-reinforced polymer (CFRP) layers [29][30][31].…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigation of the Short-Term Mechanical Response of Buried Profiled Thermoplastic Pipes with Different Diameters to External Loads

Shi

Zhang

et al. 2021

Mathematical Problems in Engineering

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High-density polyethylene (HDPE) double-wall corrugated pipe is a flexible buried pipe widely used in municipal drainage, and its deformation is affected by the compactness of the surrounding soil. This paper uses the ABAQUS to establish a three-dimensional pipe-soil model of double-wall corrugated pipes, and the mechanical response behavior of corrugated pipes with different nominal diameters subject to external loads is studied. The results show that the strain distribution characteristics for pipes with different diameters are very similar, and the circumferential strain value at critical positions of the pipe is proportional to its nominal diameter. Under poor backfill conditions, small-diameter pipelines are more prone to damage caused by strain concentration, while large-diameter pipelines may be damaged due to local bending.

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Mechanical response of buried High-Density Polyethylene pipelines under normal fault motions

Cited by 26 publications

References 11 publications

Research on the Mechanical Behavior of Buried Double-Wall Corrugated Pipes

Research on the Mechanical Behavior of Buried Double-Wall Corrugated Pipes

Influences of fiber reinforced polymer layer on the dynamic deflection of concrete pipes containing nanoparticle subjected to earthquake load

Numerical Investigation of the Short-Term Mechanical Response of Buried Profiled Thermoplastic Pipes with Different Diameters to External Loads

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