Methods of protecting buried pipelines and culverts in transportation infrastructure using EPS geofoam

Bartlett, Steven F.; Lingwall, Bret N.; Vaslestad, Jan

doi:10.1016/j.geotexmem.2015.04.019

Cited by 88 publications

(30 citation statements)

References 5 publications

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“…2001;NEGUSSEY et al 2001;SRIRAJAN, 2001;NEGUSSEY, 2002;ABU-HEJLEH et al, 2003;ATHANASOPOULOS ET AL. 2007;HORVATH, 2008;MCGUIGAN AND VALSANGKAR, 2010;JAFARI, 2010;STARK et al 2012;BARTLETT et al 2015). ABSTRACT: Biotechnological processes are becoming an excellent alternative for total or partial replacement of conventional chemical processes.…”

Section: Capítulo 11mentioning

confidence: 99%

Ciências Exatas e da Terra e a Dimensão Adquirida através da Evolução Tecnológica 4

2019

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Section: Capítulo 11mentioning

confidence: 99%

Ciências Exatas e da Terra e a Dimensão Adquirida através da Evolução Tecnológica 4

2019

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“…Such inclusions, when placed behind earth retaining structures, beneath foundations, and above pipelines and tunnels, compress readily and thereby reduce earth pressure on the structure (Horvath, 1996). The application of controlled deformations in reducing pressures on earth retaining structures has been documented by researchers and practitioners (McGown et al, 1987;Karpurapu and Bathurst, 1992;Partos and Kazaniwsky, 1987;Bartlett et al, 2015). Bathurst et al (2007aBathurst et al ( , 2007b and Zarnani and Bathurst (2008) have presented results of numerical and physical model tests with expanded polystyrene (EPS) geofoam used as seismic buffers.…”

Section: Compressible Barriersmentioning

confidence: 99%

Numerical and physical modeling of geofoam barriers as protection against effects of surface blast on underground tunnels

Morgante

Zimmie

2016

Geotextiles and Geomembranes

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a b s t r a c tAn explosion on the ground surface may cause significant damage to an underground structure, such as a tunnel or a pipeline. The extent of damage would depend on the intensity of blast, the material and configuration of the structure, as well as the nature and geometry of the intervening material.An underground structure may be protected by means of a protective barrier, installed directly above the structure. The effectiveness of using a compressible barrier, made of polyurethane geofoam, to mitigate the effects of surface explosion was investigated.The effects of a surface explosion were studied through a combination of physical model tests and numerical modeling. Reduced-scale (1:70 scale) physical model tests were conducted using a geotechnical centrifuge, where the scaling law for explosions was utilized to model the effects of a large explosion using a relatively small mass of explosives under a high gravitational field (70 g, in this case). The results of the physical model tests were used to calibrate a three-dimensional numerical model in which a fully-coupled EulereLagrange solver was utilized to model the explosions.Tunnel configurations with and without protective barriers were studied to assess the mitigation provided by protective barriers. Material properties for polyurethane geofoam barriers were evaluated from laboratory tests. The influence of barrier thickness in reducing the strains, stresses, and pressures on the tunnel induced by an explosion was studied. The beneficial effects of a protective geofoam barrier were found to increase with increasing barrier thickness only up to a certain thickness, beyond which, further increase in thickness did not result in additional reductions. The results will help in design optimization, while planning protection systems for new tunnels, as well as for retrofitting existing tunnels.

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“…EPS has been applied in transportation infrastructure for the protection of culverts and buried pipes against the applied horizontal and vertical forces. Bartlett et al (2015) have presented experimental and numerical studies, indicating that EPS geofoam backfill can be effective for the protection of buried steel pipes against permanent ground displacements.…”

Section: Friction Reduction Measuresmentioning

confidence: 99%

Evaluation of Seismic Protection Methods for Buried Fuel Pipelines Subjected to Fault Rupture

Gantes

Melissianos

2016

Front. Built Environ.

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Buried steel fuel pipelines are critical lifelines for the society and the economy but are very vulnerable to earthquake-induced ground failure. Traversing seismic areas inevitably results in several pipe-fault crossings. Fault rupture forces a buried pipeline to undergo deformations that could be substantial and heavily endanger its integrity. Due to the grave consequences of a potential pipe failure, mitigating measures are commonly applied at pipe-fault crossings to reduce the effects of a potential fault activation. In this paper, a comparative review of several measures that are used in practice or have been proposed in the technical literature is presented. Numerical analyses are then carried out to compare the effectiveness of commonly used measures and to extract conclusions regarding their applicability. Results indicate that the most efficient among the evaluated measures are pipe placement within culverts and use of flexible joints. Trench backfilling with pumice is a moderately effective measure in terms of pipe protection, while steel grade upgrade, wall thickness increase, and pipe wrapping with geotextile are found to be insufficient protection methods.

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Methods of protecting buried pipelines and culverts in transportation infrastructure using EPS geofoam

Cited by 88 publications

References 5 publications

Ciências Exatas e da Terra e a Dimensão Adquirida através da Evolução Tecnológica 4

Ciências Exatas e da Terra e a Dimensão Adquirida através da Evolução Tecnológica 4

Numerical and physical modeling of geofoam barriers as protection against effects of surface blast on underground tunnels

Evaluation of Seismic Protection Methods for Buried Fuel Pipelines Subjected to Fault Rupture

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