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Uplift Resistance of Buried Pipelines Enhanced by Geogrid

Faizi, K. / Armaghani, D. Jahed / Momeni, E. / Nazir, R. / Mohamad, E. Tonnizam

Failure of an oil or gas pipeline due to low uplift resistance of soil has serious economic and environmental consequences; hence, increasing the uplift resistance through soil reinforcement is of interest. The main purpose of this paper is to investigate the possible use of geogrid to enhance the uplift resistance of buried pipelines. For this reason, 11 small-scale laboratory tests were performed. The tests were conducted to investigate the effect of pipe diameter, burial depth, as well as length and number of geogrid layers on the uplift resistance of sandy soils. The experimental results suggest that although pipe diameter and burial depth are directly related to uplift resistance, the direct effect of geogrid incorporation is more pronounced. While Peak Uplift Resistance (PUR) is of interest, findings indicate that the number of geogrid layers does not have a pivotal influence on PUR. In addition, for verification purpose, the PUR of 11 laboratory tests were back analyzed numerically using finite element software PLAXIS 3D TUNNEL. The findings show that numerical and experimental results are in good agreement.

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Uplift Resistance of Buried Pipelines Enhanced by Geogrid

Faizi, K. / Armaghani, D. Jahed / Momeni, E. / Nazir, R. / Mohamad, E. Tonnizam

Failure of an oil or gas pipeline due to low uplift resistance of soil has serious economic and environmental consequences; hence, increasing the uplift resistance through soil reinforcement is of interest. The main purpose of this paper is to investigate the possible use of geogrid to enhance the uplift resistance of buried pipelines. For this reason, 11 small-scale laboratory tests were performed. The tests were conducted to investigate the effect of pipe diameter, burial depth, as well as length and number of geogrid layers on the uplift resistance of sandy soils. The experimental results suggest that although pipe diameter and burial depth are directly related to uplift resistance, the direct effect of geogrid incorporation is more pronounced. While Peak Uplift Resistance (PUR) is of interest, findings indicate that the number of geogrid layers does not have a pivotal influence on PUR. In addition, for verification purpose, the PUR of 11 laboratory tests were back analyzed numerically using finite element software PLAXIS 3D TUNNEL. The findings show that numerical and experimental results are in good agreement.

Uplift Resistance of Buried Pipelines Enhanced by Geogrid

Faizi, K. / Armaghani, D. Jahed / Momeni, E. / Nazir, R. / Mohamad, E. Tonnizam

Failure of an oil or gas pipeline due to low uplift resistance of soil has serious economic and environmental consequences; hence, increasing the uplift resistance through soil reinforcement is of interest. The main purpose of this paper is to investigate the possible use of geogrid to enhance the uplift resistance of buried pipelines. For this reason, 11 small-scale laboratory tests were performed. The tests were conducted to investigate the effect of pipe diameter, burial depth, as well as length and number of geogrid layers on the uplift resistance of sandy soils. The experimental results suggest that although pipe diameter and burial depth are directly related to uplift resistance, the direct effect of geogrid incorporation is more pronounced. While Peak Uplift Resistance (PUR) is of interest, findings indicate that the number of geogrid layers does not have a pivotal influence on PUR. In addition, for verification purpose, the PUR of 11 laboratory tests were back analyzed numerically using finite element software PLAXIS 3D TUNNEL. The findings show that numerical and experimental results are in good agreement.

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Title:

Uplift Resistance of Buried Pipelines Enhanced by Geogrid

Contributors:

Faizi, K. (author) / Armaghani, D. Jahed (author) / Momeni, E. (author) / Nazir, R. (author) / Mohamad, E. Tonnizam (author)

Published in:

Soil Mechanics and Foundation Engineering ; 51

Publication date:

2014

ISSN:

DOI:

https://doi.org/10.1007/s11204-014-9276-6

Type of media:

Article (Journal)

Type of material:

Electronic Resource

Language:

English

Keywords:

Loose Sand , Pullout Test , Dense Sand , Burial Depth , Pipe Diameter

Classification:

BKL: 56.20 Ingenieurgeologie, Bodenmechanik / 56.20$jIngenieurgeologie$jBodenmechanik

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