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Reinforced soil shear key to mitigate extrusion failure in soft soils under working platforms

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Standard

Reinforced soil shear key to mitigate extrusion failure in soft soils under working platforms. / Scotland, Ian; Poberezhniy, Viktor; Tatari, Alireza.

Proceedings of the XVII ECSMGE-2019. International Society for Soil Mechanics and Geotechnical Engineering, 2019.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Harvard

Scotland, I, Poberezhniy, V & Tatari, A 2019, Reinforced soil shear key to mitigate extrusion failure in soft soils under working platforms. in Proceedings of the XVII ECSMGE-2019. International Society for Soil Mechanics and Geotechnical Engineering, The XVII European Conference on Soil Mechanics and Geotechnical Engineering Reykjavik Iceland, Reykjavik , Iceland, 1/09/19.

APA

Scotland, I., Poberezhniy, V., & Tatari, A. (2019). Reinforced soil shear key to mitigate extrusion failure in soft soils under working platforms. In Proceedings of the XVII ECSMGE-2019 International Society for Soil Mechanics and Geotechnical Engineering.

Vancouver

Scotland I, Poberezhniy V, Tatari A. Reinforced soil shear key to mitigate extrusion failure in soft soils under working platforms. In Proceedings of the XVII ECSMGE-2019. International Society for Soil Mechanics and Geotechnical Engineering. 2019

Author

Scotland, Ian ; Poberezhniy, Viktor ; Tatari, Alireza. / Reinforced soil shear key to mitigate extrusion failure in soft soils under working platforms. Proceedings of the XVII ECSMGE-2019. International Society for Soil Mechanics and Geotechnical Engineering, 2019.

Bibtex

@inproceedings{45b05636c8024feca171d7dd2c8577de,
title = "Reinforced soil shear key to mitigate extrusion failure in soft soils under working platforms",
abstract = "Geogrids and geotextiles are widely used in working platforms to increase the allowable surface bearing pressures and reduce the platform thickness required. While analytically based approaches exist for the design of these platforms, these vary in their complexity and the range of critical properties they consider, leading to uncertainty in which ones to suggest. They can be over conservative compared to empirical methods based on historical performance. For projects with combinations of high rig loading and very soft underlying ground (cu < 20 kN/m2), there is greater potential for extrusion and edge circular failures. The edge stability of platforms can be improved with a number of measures such as increased stand-off zones, loading mats, balancing mounds and shear trenches. This paper considers the extrusion mechanism and how a wrapped shear trench can be used to counteract edge insta-bility and extend the suitability of platforms over very soft soils. The effectiveness of this method is demonstrated with a UK case study. This paper covers a brief introduction to working platform design, before comparing a range of approaches. The paper discusses the extrusion failure mechanism and a solution using a wrapped shear key trench.",
author = "Ian Scotland and Viktor Poberezhniy and Alireza Tatari",
note = "DOI not working: 10.32075/17ECSMGE-2019-1020",
year = "2019",
month = "9",
day = "1",
language = "English",
isbn = "978-9935-9436-1-3",
booktitle = "Proceedings of the XVII ECSMGE-2019",
publisher = "International Society for Soil Mechanics and Geotechnical Engineering",
address = "United Kingdom",

}

RIS

TY - GEN

T1 - Reinforced soil shear key to mitigate extrusion failure in soft soils under working platforms

AU - Scotland, Ian

AU - Poberezhniy, Viktor

AU - Tatari, Alireza

N1 - DOI not working: 10.32075/17ECSMGE-2019-1020

PY - 2019/9/1

Y1 - 2019/9/1

N2 - Geogrids and geotextiles are widely used in working platforms to increase the allowable surface bearing pressures and reduce the platform thickness required. While analytically based approaches exist for the design of these platforms, these vary in their complexity and the range of critical properties they consider, leading to uncertainty in which ones to suggest. They can be over conservative compared to empirical methods based on historical performance. For projects with combinations of high rig loading and very soft underlying ground (cu < 20 kN/m2), there is greater potential for extrusion and edge circular failures. The edge stability of platforms can be improved with a number of measures such as increased stand-off zones, loading mats, balancing mounds and shear trenches. This paper considers the extrusion mechanism and how a wrapped shear trench can be used to counteract edge insta-bility and extend the suitability of platforms over very soft soils. The effectiveness of this method is demonstrated with a UK case study. This paper covers a brief introduction to working platform design, before comparing a range of approaches. The paper discusses the extrusion failure mechanism and a solution using a wrapped shear key trench.

AB - Geogrids and geotextiles are widely used in working platforms to increase the allowable surface bearing pressures and reduce the platform thickness required. While analytically based approaches exist for the design of these platforms, these vary in their complexity and the range of critical properties they consider, leading to uncertainty in which ones to suggest. They can be over conservative compared to empirical methods based on historical performance. For projects with combinations of high rig loading and very soft underlying ground (cu < 20 kN/m2), there is greater potential for extrusion and edge circular failures. The edge stability of platforms can be improved with a number of measures such as increased stand-off zones, loading mats, balancing mounds and shear trenches. This paper considers the extrusion mechanism and how a wrapped shear trench can be used to counteract edge insta-bility and extend the suitability of platforms over very soft soils. The effectiveness of this method is demonstrated with a UK case study. This paper covers a brief introduction to working platform design, before comparing a range of approaches. The paper discusses the extrusion failure mechanism and a solution using a wrapped shear key trench.

UR - https://www.ecsmge-2019.com/

UR - https://www.issmge.org/publications/issmge-publication-and-open-access-policy

M3 - Conference contribution

SN - 978-9935-9436-1-3

BT - Proceedings of the XVII ECSMGE-2019

PB - International Society for Soil Mechanics and Geotechnical Engineering

ER -

ID: 15710685